<Tr> <Td_colspan="8"> Ultron attacks New York and the all the Avengers (new and old) go to stop him . Ultron uses all the Inhumans to attack the humans of Earth so that only he and his robot army will be left . The Avengers go to regroup at Dr. Strange's Sanctum Sanctourm . Ant - Man and Iron Man have a way to disable the registration disks and some of the other Avengers go to fight Ultron and the others go with Iron Man and Ant - Man . Ant - Man and Iron Man are quickly working on a solution, but not before they are found by the Inhumans . They send the others to fight them while they work . Iron Man and Ant - Man find a solution and test it on Inferno, and it works . Everything seems to be going good until Ultron orders his sentries to destroy all life on Earth . Ultron than transfers his consciousnesses into a vibranium body in Wakanda . The Avengers attack Ultron and fail to stop him . Ultron then goes to destroy humans when the Avengers go to battle him . They then crash the Avenjet into Ultron . Vision then reverses the ray Ultron was going to use to destroy the humans and it hits Ultron . Ultron then moves over his consciousnesses to Iron Man's Armor and his mind . Just as the Avengers are about to destroy Ultron and Tony, Dr. Strange shows up and creates a dimension where Ultron won't be able to come back . Tony and the original Avengers go into the dimension and Dr. Strange saves Tony . But he has to stay in the dimension so Ultron can't leave . The Avengers go back to Earth and leave Tony, but Falcon links the communication system to be inter-dimensional so that they can communicate with Tony . </Td> </Tr> <P> This season deals with the Avengers being scattered across time and space by a new incarnation of the Cabal as Black Panther assembles another incarnation of the Avengers to find them in time to save the universe . </P> <Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers (millions) </Th> </Tr> <Tr> <Th> 79 80 </Th> <Td> </Td> <Td> "Avengers No More" </Td> <Td> Tim Eldred Michah Gunnell </Td> <Td> Elliott Casey Gavin Hignight </Td> <Td> June 17, 2017 (2017 - 06 - 17) </Td> <Td> 404 405 </Td> <Td> 0.21 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Part 1: As the Avengers find a way to return Iron Man to their reality without bringing Ultron along, they managed to prevent Ghost from stealing Stark Industries technology at the Stark Expo monitored by Stark Industries' cross-dimensional research intern Jane Foster whom Thor takes a liking to . After swiping the prototype Arc Reactor, Leader heads to the Wakandan Consulate to steal the Vibranium there with his army of Humanoids . When a guilt - ridden Thor helps Black Panther take down Leader when the Avengers arrive, Leader summons his new incarnation of the Cabal (consisting of Arnim Zola, Enchantress, Executioner, and Kang the Conqueror) to fight the Avengers while taking advantage of Iron Man not being there . </P> Part 2: When the Avengers are trapped by the effects of the Static Expander made from the stolen Stark Industries technology, Black Panther escapes with the stolen Vibranium and avoids Executioner in order to get a team to help him . Upon awakening Vision who helps him fight Executioner and his pet Asgardian dire wolf as well as Enchantress reclaiming the Vibranium for Leader, Black Panther and Vision must lead Ant - Man, Captain Marvel, Ms. Marvel, and Wasp (as The All - New, All - Different Avengers) into finding the Avengers so that they can stop the Cabal . </Td> </Tr> <Tr> <Th> 81 </Th> <Td> </Td> <Td> "The Sleeper Awakens" </Td> <Td> Tim Eldred </Td> <Td> Henry Gilroy </Td> <Td> August 27, 2017 (2017 - 08 - 27) </Td> <Td> 406 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> After the Avengers disappeared without a trace following a fight with the Cabal, Black Panther brings The New Avengers to his new mansion . They find Captain America alive, but Vision discovers that he is a robot sent by Red Skull, who called the New Avengers for help when his new A.I. system in the Sleeper turns on him . Vision repairs this skullbot and keeps it as a pet . </Td> </Tr> <Tr> <Th> 82 </Th> <Td> </Td> <Td> "Prison Break" </Td> <Td> Micah Gunnell </Td> <Td> Danielle Wolff </Td> <Td> August 27, 2017 (2017 - 08 - 27) </Td> <Td> 407 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Yelena Belova returns where she is now calling herself Crimson Widow . She allies herself with Zarda and Typhoid Mary in a plot to spring all the inmates at the Vault . Only Captain Marvel and Wasp should avoid this escape . </Td> </Tr> <Tr> <Th> 83 </Th> <Td> 5 </Td> <Td> "The Incredible Herc" </Td> <Td> Tim Eldred </Td> <Td> Geoffrey Thorne </Td> <Td> August 27, 2017 (2017 - 08 - 27) </Td> <Td> 408 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Hercules shows up on Earth wanting to be a member of the New Avengers . However, it turns out he's hiding from Ares who is seeking to steal the key to Tartarus from him . At the same time, Captain Marvel and Black Panther argue over who's leader of the new team . </Td> </Tr> <Tr> <Th> 84 </Th> <Td> 6 </Td> <Td> "Show Your Work" </Td> <Td> Micah Gunnell </Td> <Td> Zach Craley </Td> <Td> August 27, 2017 (2017 - 08 - 27) </Td> <Td> 409 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Taskmaster reluctantly allies himself with the New Avengers to stop MODOK from repopulating the Earth with his clones . At the same time, he tries to teach Ms. Marvel how to take shortcuts in life against Vision's judgement . </Td> </Tr> <Tr> <Th> 85 </Th> <Td> 7 </Td> <Td> "Sneakers" </Td> <Td> Tim Eldred </Td> <Td> Shaene Siders </Td> <Td> August 27, 2017 (2017 - 08 - 27) </Td> <Td> 410 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Ant - Man and Black Panther jet off to Wakanda when Baron Helmut Zemo goes after a powerful relic hidden away by Black Panther's father T'Chaka and Baron Heinrich Zemo . </Td> </Tr> <Tr> <Th> 86 </Th> <Td> 8 </Td> <Td> "Why I Hate Halloween" </Td> <Td> Micah Gunnell </Td> <Td> Geoffrey Thorne </Td> <Td> October 8, 2017 (2017 - 10 - 08) </Td> <Td> 403 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> <P> On Halloween, the Avengers raid an underground Hydra base where they find that its scientist Whitney Frost has been doing experiments related to vampires . Upon taking her to the safe house named "Beach House" in Vermont while the others fight the attacking vampires, Hawkeye must protect Whitney Frost from the vengeful forces of Dracula and his vampires even when Crossbones and Crimson Widow show up to reclaim Whitney Frost . </P> <P> Note #1: Wynn Everett reprises her role of Whitney Frost from Agent Carter . </P> Note #2: Despite airing during Season 4, the timeline of this episode takes place during Season 3 . </Td> </Tr> <Tr> <Th> 87 </Th> <Td> 9 </Td> <Td> "The Once and Future Kang" </Td> <Td> Micah Gunnell </Td> <Td> Shannon Eric Denton </Td> <Td> October 15, 2017 (2017 - 10 - 15) </Td> <Td> 411 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> <P> After Jane Foster finds where each of the Avengers is located, she provides the New Avengers special tether bracelets to rescue the Avengers from the location where the Cabal is overseeing . Vision and Wasp head to the future to save Falcon who has joined forces with Kang the Conqueror . They must work with the rebels led by a future version of Red Hulk in order to free Falcon from Kang the Conqueror's control . </P> Note: Beginning in this episode, Falcon's appearance resembles his Marvel Cinematic Universe appearance </Td> </Tr> <Tr> <Th> 88 </Th> <Td> 10 </Td> <Td> "Dimension Z" </Td> <Td> Tim Eldred </Td> <Td> Geoffrey Thorne </Td> <Td> October 15, 2017 (2017 - 10 - 15) </Td> <Td> 412 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Ant - Man travels to another dimension called Dimension Z to rescue Black Widow, Captain America, and Hawkeye from Arnim Zola, brainwashed operatives, and a group of Doughboys . </Td> </Tr> <Tr> <Th> 89 </Th> <Td> 11 </Td> <Td> "The Most Dangerous Hunt" </Td> <Td> Micah Gunnell </Td> <Td> Henry Gilroy </Td> <Td> October 22, 2017 (2017 - 10 - 22) </Td> <Td> 413 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> In the Asgardian wilderness, Black Panther and Hulk find themselves chained together and on the run from Executioner who uses a special crystal on his axe to control Hulk's transformations . While making their way to Asgard, they must avoid Executioner, Ulik and a fellow Rock Troll, and a group of Asgardian Goblins . </Td> </Tr> <Tr> <Th> 90 </Th> <Td> 12 </Td> <Td> "Under the Spell of the Enchantress" </Td> <Td> Tim Eldred </Td> <Td> Eugene Son </Td> <Td> October 22, 2017 (2017 - 10 - 22) </Td> <Td> 414 </Td> <Td> 0.25 </Td> </Tr> <Tr> <Td_colspan="8"> Captain Marvel and Ms. Marvel travel to an icy asteroid to rescue Thor from the Enchantress . They fight Enchantress who has brainwashed Thor to be her bodyguard as well as brainwashed warriors and monstrous snowmen . </Td> </Tr> <Tr> <Th> 91 </Th> <Td> 13 </Td> <Td> "The Return" </Td> <Td> Micah Gunnell </Td> <Td> Danielle Wolff </Td> <Td> October 22, 2017 (2017 - 10 - 22) </Td> <Td> 415 </Td> <Td> 0.16 </Td> </Tr> <Tr> <Td_colspan="8"> After returning to Earth, the Avengers and the New Avengers discover the Earth has been taken over by Loki who used the Casket of Ancient Winters and is revealed to be the true leader of the Cabal . The Avengers and the New Avengers must fight Loki and his army of Frost Trolls while preventing the World Breaker ships above Manhattan from destroying Earth . </Td> </Tr> <Tr> <Th> 92 </Th> <Td> 14 </Td> <Td> "New Year's Resolution" </Td> <Td> Tim Eldred </Td> <Td> Danielle Wolff </Td> <Td> December 3, 2017 (2017 - 12 - 03) </Td> <Td> 402 </Td> <Td> 0.40 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Past and present collide on New Year's Eve as Howard Stark and Peggy Carter are suddenly brought to the present from 1949 . They team up with Iron Man and Captain America to save the time stream from Kang the Conqueror who seeks to eliminate Howard Stark or Tony Stark to ensure that his enemy Iron Man 2020 doesn't exist . At the same time, it was discovered that Doctor Faustus was brought along for the ride as Howard and Peggy had him locked in their trunk after apprehending him . </P> <P> Note #1: Hayley Atwell reprises her role of Peggy Carter from the Marvel Cinematic Universe . </P> Note #2: Despite airing during Season 4, the timeline of this episode takes place during Season 3 . </Td> </Tr> <Tr> <Th> 93 94 </Th> <Td> 15 16 </Td> <Td> "The Eye of Agamotto" </Td> <Td> Tim Eldred Micah Gunnell </Td> <Td> Michael Vogel Gavin Hignight </Td> <Td> January 7, 2018 (2018 - 01 - 07) </Td> <Td> 416 417 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> <P> Part 1: The Avengers and the New Avengers fight Hydra when they break into a S.H.I.E.L.D. warehouse filled with magical items and make off with a specific talisman . To find where the talisman is taken, the Avengers and the New Avengers split into two groups . Captain America and Black Panther head to Hong Kong where they find Baron Mordo working on the Talisman of Kaluu . During this time, Black Panther's sister Shuri catches up to Black Panther and Captain America wanting to do more for Wakanda . </P> Part 2: Following Baron Mordo's defeat, the mysterious person who trapped him in another dimension needs help seeking Doctor Strange as Captain America and Black Panther give him a ride back to the Avengers Compound where Doctor Strange suddenly attacks them . He identifies the mysterious person as Agamotto who plans to take back the Eye of Agamotto and cleans all of Earth of it's chaos . He starts by using a shadow curse to take control of Captain America and Black Panther . Now Doctor Strange and the remaining Avengers must find a way to defeat Agamotto . </Td> </Tr> <Tr> <Th> 95 </Th> <Td> 17 </Td> <Td> "Beyond" </Td> <Td> Tim Eldred </Td> <Td> Geoffrey Thorne </Td> <Td> January 14, 2018 (2018 - 01 - 14) </Td> <Td> 418 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> After the Avengers are transported to a strange new world called Battleworld and find Avengers Tower rebuilt in the domain of Egyptia, they meet the Beyonder who states that they are here for his "experiment ." While exploring Egyptia, Captain America and Black Widow find Iron Man due to the dimension he was in being made into the domain of No - Tech Land . In a pyramid in Egyptia, Captain America, Black Widow, and Iron Man battle the mysterious Moon Knight as well as an army of mummies with sand - based abilities . </Td> </Tr> <Tr> <Th> 96 </Th> <Td> 18 </Td> <Td> "Underworld" </Td> <Td> Micah Gunnell </Td> <Td> Eugene Son </Td> <Td> January 14, 2018 (2018 - 01 - 14) </Td> <Td> 419 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Loki appears at Avengers Tower where he wants to help them get back to Earth as Beyonder took parts of Asgard with him . As they search for the Bifrost Bridge when exploring the underground Battleworld domain of the NYC Underworld, Iron Man, Thor, Hulk, and Loki must battle the Enchantress as well as Rock - Skinned Rock Trolls from Nidavellir and unnamed slithering creatures that mostly operate in a strange mist . </Td> </Tr> <Tr> <Th> 97 </Th> <Td> 19 </Td> <Td> "The Immortal Weapon" </Td> <Td> Tim Eldred </Td> <Td> Trevor Devall </Td> <Td> January 14, 2018 (2018 - 01 - 14) </Td> <Td> 420 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Iron Man and Loki begin rebuilding the Bifrost Bridge . While trying to retrieve Heimdall's sword from K'un - Lun, Black Panther and Falcon team up with Iron Fist to overcome Dracula (who was possessed by the Venom Symbiote enough to make him immune to sunlight) and his vampires . In addition, Dracula plans to head to a far - off Battleworld domain that is filled with more Symbiotes to empower his vampire army . </Td> </Tr> <Tr> <Th> 98 </Th> <Td> 20 </Td> <Td> "The Vibranium Coast" </Td> <Td> Micah Gunnell </Td> <Td> Zach Craley </Td> <Td> January 14, 2018 (2018 - 01 - 14) </Td> <Td> 421 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> As Iron Man and Loki continue rebuilding the Bifrost Bridge, Ant - Man and Ms. Marvel are sent to the Red Skull Sea somewhere off the Vibranium Coast to find some Vibranium . While at the Red Skull Sea, Ant - Man and Ms. Marvel reluctantly team up with a pirate version of Typhoid Mary to battle the evil pirate Dread Skull (a pirate version of Red Skull), his first - mate Crossbones, and an army of Skullbots . </Td> </Tr> <Tr> <Th> 99 </Th> <Td> 21 </Td> <Td> "Weirdworld" </Td> <Td> Tim Eldred </Td> <Td> Danielle Wolff </Td> <Td> March 4, 2018 (2018 - 03 - 04) </Td> <Td> 422 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> In the Battleworld domain of Weirdworld, Black Widow and Captain Marvel find that Bruce Banner is hunting Hulk . The two of them must stop the now - separated Bruce Banner and Hulk from hurting each other, while they battle the evil Morgan le Fay who duped Bruce Banner into capturing Hulk so that she can harness his powers and use them to take over the rest of Battleworld . </Td> </Tr> <Tr> <Th> 100 </Th> <Td> 22 </Td> <Td> "Westland" </Td> <Td> Micah Gunnell </Td> <Td> Geoffrey Thorne </Td> <Td> March 4, 2018 (2018 - 03 - 04) </Td> <Td> 423 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Hawkeye, Vision, Loki, and Wasp head to Westland, an old west domain also containing dinosaurs to find Doctor Strange . They find him working as their doctor in the midst of an attack by a Kree Conquest Hive where Hawkeye is temporarily blinded . After running into Rocket Raccoon and Groot after their ship crashed, Vision finds Jane Foster who has been operating as Westland's sheriff under the alias of "Calamity Jane Foster ." </Td> </Tr> <Tr> <Th> 101 </Th> <Td> 23 </Td> <Td> "The Citadel" </Td> <Td> Tim Eldred </Td> <Td> Danielle Wolff </Td> <Td> March 11, 2018 (2018 - 03 - 11) </Td> <Td> 424 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Captain America and Iron Man are captured by the Beyonder and the villain team he has assembled from Absorbing Man, Ares, Crimson Widow, and MODOK . While Captain America works to evade the villains in Beyonder's lair, Iron Man is shown by Beyonder the truth of his experiment . </Td> </Tr> <Tr> <Th> 102 </Th> <Td> 24 </Td> <Td> "The Wastelands" </Td> <Td> Micah Gunnell </Td> <Td> Eugene Son </Td> <Td> March 11, 2018 (2018 - 03 - 11) </Td> <Td> 425 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> Before they can use the Bifrost to undo Battleworld, the Avengers must defeat Ares and an army of Ghost Riders . As Doctor Strange and Loki work on the Bifrost, Thor throws Mjolnir to Jane Foster when she gets stuck in Beyonder's quicksand attack transforming her into a female Thor . </Td> </Tr> <Tr> <Th> 103 </Th> <Td> 25 </Td> <Td> "All Things Must End" </Td> <Td> Tim Eldred </Td> <Td> Eugene Son </Td> <Td> March 11, 2018 (2018 - 03 - 11) </Td> <Td> 426 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> After Loki becomes the Sorcerer Supreme following Beyonder's defeat, the Avengers are the only force standing between him and the domination of the universe even after he defeated Odin . While the Avengers and the New Avengers fight an army of Mindless Ones, Doctor Strange and Jane Foster's Thor form rescue Thor even when Loki unleashes the All Dark . </Td> </Tr> </Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers (millions) </Th> </Tr>

Avengers assemble season 4 episode 21 air date