<Table> <Tr> <Th> No. in series </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Written by </Th> <Th> Story by </Th> <Th> Original air date </Th> <Th> U.S. viewers (in millions) </Th> </Tr> <Tr> <Th> 31 </Th> <Td> </Td> <Td> "Weekend at the Halberts"' </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 21, 2017 (2017 - 08 - 21) </Td> <Td> 0.57 </Td> </Tr> <Tr> <Td_colspan="7"> <P> Despite the Nexo Knights' victory in the previous episode, the entire kingdom is in depression . Lance gains the idea to throw a party in honour of Clay saving Queen Halbert in order to lighten everyone's moods . However, Clay's petrified body is painted and placed in his remote - controlled battle suit in order to avoid suspicion . Meanwhile, Robin and Ava have to deal with Sir Bricklyn and his colleague Sir Grimace when they take some students from the Knighton Academy on a tour of the Fortrex (and constantly prank them) for the school field trip . Jestro gains the idea to ambush the Fortrex in hopes of cheering up the Cloud of Monstrox unaware that the knights are at the party . Fortunately, Ava is able to restore Merlok 2.0 to the Fortrex and he is able to provide the Knighton Academy students with a Nexo power that allows them to fight back against the Stone Monster Army, forcing them to retreat (as they do not have the Cloud of Monstrox to reanimate them) much to the Cloud of Monstrox's amusement . Back at the party, Macy loses control Clay's battle suit forcing the Nexo Knights to pin it down . After the party, they reveal the truth about Clay to King and Queen Halbert and they agree not to mention it to the rest of the kingdom . </P> Note: Fletch and Izzy from the Knights Academy book series make cameos with the students . </Td> </Tr> <Tr> <Th> 32 </Th> <Td> </Td> <Td> "The Gray Knight" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 22, 2017 (2017 - 08 - 22) </Td> <Td> 0.53 </Td> </Tr> <Tr> <Td_colspan="7"> The Nexo Knights return to the Fortrex and place Clay on top, saying that he is a statue commissioned by King Halbert . However, Merlok 2.0 is still experiencing problems with returning to the Fortrex such as short - term memory loss . Although he does tell Robin to start working on a "Secret Project" and advises him not to tell the others . Elsewhere, Jestro and the Cloud of Monstrox get their hands on the Rogul associated with the Forbidden Power of Shocking Scare (which temporarily eliminates all courage in the victim, rendering them too cowardly to fight back). But when the Nexo Knights use a combo power to adapt to the Forbidden Power, they gain the upper hand . Noticing Clay in his petrified state, the Cloud of Monstrox uses his lightning to restore him to life . However, Clay has been corrupted into the Cloud of Monstrox's loyal servant and ultimate weapon as the other knights are to reluctant to fight Clay . Now calling himself "The Gray Knight," Clay ambushes the Fortrex in hopes of destroying Merlok 2.0 once and for all . While the other Knights stall him, Merlok 2.0 prepares a spell that he hopes will restore Clay's morality . However, since Robin provided Merlok 2.0 with too much power, Clay is knocked back out of the Fortrex and the Knights become determined to find him . The next day, Clay wakes up still petrified and finds himself in a western town in the desert . </Td> </Tr> <Tr> <Th> 33 </Th> <Td> </Td> <Td> "The Good, the Bad and the Tightwad" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 23, 2017 (2017 - 08 - 23) </Td> <Td> 0.56 </Td> </Tr> <Tr> <Td_colspan="7"> Clay awakes in the western town of Nothing Hill, robbed of his memories . Noticing this, Jorah Tightwad decides to use this to his advantage by telling Clay that he is Tightwad's servant and having him threaten to destroy the town if the townspeople don't give Tightwad the rights to the nearby gold mine . When the other Nexo Knights locate Clay they split up to determine which route is faster with Macy and Lance arriving first . Due to Clay's amnesia, they are forced to battle him . Meanwhile, Axl and Aaron find Jestro and the Stone Monster Army and Axl is struck with the Forbidden Power of Shocking Scare, stripping him of all courage . Fortunately, Aaron is able to fend of Jestro and escape with Axl . They arrive in Nothing hill just as Macy and Lance restore Clay's memories . With his memories and morality restored, Clay sends Tightwad out of Nothing Hill and gives the gold he mined to the townspeople with Axl regaining his courage . However, Jestro manages to transfer the Forbidden Power of Shocking Scare into another one of the pillars atop Mount Thunderstrox . </Td> </Tr> <Tr> <Th> 34 </Th> <Td> </Td> <Td> "In his Majesty's Secret Service ." </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 24, 2017 (2017 - 08 - 24) </Td> <Td> 0.51 </Td> </Tr> <Tr> <Td_colspan="7"> Clay has seemingly turned evil again and has wiped out the Nexo Knights . Fortunately, this news broadcast was falsified in order to deceive Jestro and the Cloud of Monstrox . However, in order to get Clay to infiltrate them, he goes through spy training under the teachings of Jack Shields (a parody of James Bond). Clay, posing as his villainous self, infiltrates Jestro and the Cloud of Monstrox's forces . He finds out their plans to collect the Forbidden Powers . As Clay shakes Ruina Stoneheart's hand, a surge of energy passes through them . Unfortunately when Robin's life is put on the line, Clay's cover is blown, but the other Nexo Knights swiftly launch an ambush on the Stone Monster Army, forcing them to retreat . Back at the Fortrex, Clay reveals Jestro and the Cloud of Monstrox's plan to the other knights, but Macy and Merlok 2.0 notice that Clay is no longer himself and Merlok 2.0 believes that Ruina has cursed him with dark magic . </Td> </Tr> <Tr> <Th> 35 </Th> <Td> 5 </Td> <Td> "The Stranger in the Halps" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 25, 2017 (2017 - 08 - 25) </Td> <Td> 0.57 </Td> </Tr> <Tr> <Td_colspan="7"> After his rage sabotages an interrogation attempt, Clay leaves the team to meditate until he can control his rage . Elsewhere, Jestro and the Cloud of Monstrox have gotten their hands on the Forbidden Power of Devious Demolition (which causes parts of its targets to fall off). This Forbidden Power enables the Cloud of Monstrox to bring the debris created by it to life in order to overwhelm the Nexo Knights . When an avalanche disables the Nexo Power transmitter, the Nexo Knights are forced to retreat to the top of a mountain where they meet up with Merlok's old friend, magician / demolitions expert "The Great Rockowski" who has devoted his life to pacifism until the Stone Monster Army destroy his topiary . After Rockowski forces the Stone Monster Army to retreat, the Nexo Power transmitter is repaired . Meanwhile, the Forbidden Power of Devious Demolition is transferred into another pillar atop Mount Thunderstrox . While Clay is meditating, he sees Ruina invade his mind causing him to become even more violent, vengeful, and more than willing to send the entire Stone Monster Army, Jestro, and the Cloud of Monstrox to their graves . </Td> </Tr> <Tr> <Th> 36 </Th> <Td> 6 </Td> <Td> "Krakenskull" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 28, 2017 (2017 - 08 - 28) </Td> <Td> 0.49 </Td> </Tr> <Tr> <Td_colspan="7"> After obtaining the Rogul that is associated with the Forbidden Power of Metal - Morphosis (which possesses the ability to turn gold into lead), Jestro and the Cloud of Monstrox buy and reanimate the petrified Lord Krakenskull, his Krakenbeast, and his army who were unearthed by Jorah Tightwad . When Lord Krakenskull uses his amalgamated Forbidden Power of Petrified Quake (which allows his Krakenbeast to generate earthquakes and petrify objects with a roar), it petrifies the Nexo Knights vehicles causing the Knights to retreat . When they regroup even with a combo Nexo Power, Lord Krakenskull's army proves to be indestructible until Clay arrives, destroys the Forbidden Power of Petrified Quake enough to undo everything it had ever done, and unleashes a violent frenzy which is only halted when Ruina slows him down . Clay rejoins the Nexo Knights, although Ruina's plans are furthering into motion . After the Stone Monster Army retreats, they begin to head to Mt . Thunderstrox . Before that happens, Jestro uses the Power of Metal - Morphosis on Jorah Tightwad's gold city and coins . </Td> </Tr> <Tr> <Th> 37 </Th> <Td> 7 </Td> <Td> "Heart of Stone" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 29, 2017 (2017 - 08 - 29) </Td> <Td> 0.55 </Td> </Tr> <Tr> <Td_colspan="7"> After Clay goes into another frenzy during a training session, Lance is convinced that Aaron needs help being a leader . Meanwhile, Jestro and the Cloud of Monstrox have obtained the Roguls associated with the Forbidden Powers of Malicious Melting (which melts its target), Evil Evaporate (which evaporates water) and Confounding Confusion (which eliminates the victim's intelligence). Although they succeed in transferring the first two into the pillars atop Mount Thunderstrox, the Nexo Knights track them as they are headed to transfer the last one . Clay goes into another frenzy and destroys the Rogul associated with Forbidden Power of Confounding Confusion, only to attempt to kill Ruina who reveals that she is Clay's mother and cursed Clay in hopes that he would follow in her footsteps . Returning to the Fortrex, Merlok 2.0 confirms that Ruina was telling the truth and that Clay possesses magical abilities that could even surpass his own . Realizing that his rage can no longer be controlled, Clay uses his newfound magic to give Macy a Nexo Power that forces her to return him to his inanimate state, much to Macy's misery . </Td> </Tr> <Tr> <Th> 38 </Th> <Td> 8 </Td> <Td> "Between a Rock and a Hard Place" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 30, 2017 (2017 - 08 - 30) </Td> <Td> 0.53 </Td> </Tr> <Tr> <Td_colspan="7"> Recapping from the previous episode, Merlok 2.0 reveals that Ruina was not only Clay's mother, but also Merlok's sister and fellow magic user and Wizard's Council member Wanda Moorington, who was originally pure - hearted until Monstrox's presence corrupted her, forcing Merlok to petrify her . As he is also Clay's uncle, Merlok become Clay's parental guardian while refraining from telling Clay about his inherent powers due to fear that he would end up like Ruina . Elsewhere, Jestro and the Cloud of Monstrox have obtained the final and most powerful Forbidden Power known as the Forbiiden Power of Awesome Annihilation (which can reduce an entire town to ruins with a single explosive blast). After adapting to the combinations of their vehicles and battle suits, the Nexo Knights attempt to prevent the Stone Monster Army from transferring the last Forbidden Power into Mount Thunderstrox . Alas, the Forbidden Power of Awesome Annihilation is transferred into the last pillar atop Mount Thunderstrox and through the process of a lengthy and powerful electrical storm that started as a result, Mount Thunderstrox is destroyed as the Stone Colossus of Ultimate Destruction awakens from within it . When the process is complete, the Cloud of Monstrox enters and possesses the Colossus of Ultimate Destruction and immediately relieves Jestro and Roberto of their duties, believing their usefulness has expired and that he no longer needs to take orders from them . As the Colossus of Ultimate Destruction marches towards a nearby town, Aaron is unsure how to defeat it . Back in the Fortrex, Clay's petrified body begins cracking as an unnatural blue glow is emitted from it . </Td> </Tr> <Tr> <Th> 39 </Th> <Td> 9 </Td> <Td> "March of the Colossus" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 31, 2017 (2017 - 08 - 31) </Td> <Td> 0.48 </Td> </Tr> <Tr> <Td_colspan="7"> The Nexo Knights begin evacuating people out of towns and villages as the Colossus of Ultimate Destruction (which is still under Monstrox's control) destroys them one by one . The Nexo Knights try to lure him onto a bridge where they intend to destroy so that he will fall into the chasm below and buying them time for Robin to finish his "Secret Secret Project". However, in order for the project to be complete, Merlok 2.0 must be transferred into the Knighton library . Meanwhile in the Fortrex, Clay's consciousness remains intact in his petrified body and he uses his magic to destroy his stone body and return to human form . Now once more the just and benevolent hero he used to be, Clay assists Robin with the project . However, the Colossus of Ultimate Destruction is able to escape the chasm while swallowing Axl whole in the process . As the remaining Knights (sans Clay) regroup at the Fortrex, Monstrox sets his sights on his next target: Knighton's castle in Knightonia . </Td> </Tr> <Tr> <Th> 40 </Th> <Td> 10 </Td> <Td> "The Fall" </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> September 1, 2017 (2017 - 09 - 01) </Td> <Td> 0.48 </Td> </Tr> <Tr> <Td_colspan="7"> After the village of Suburbington is destroyed, Axl manages to escape from the Colossus of Ultimate Destruction's bowels through the digestive system, much to his discomfort . The Nexo Knights then proceed to the Knigton library, where Merlok 2.0 is transferred to and Robin's "Secret Secret Project" is completed and revealed to be an escape rocket . Macy, Lance, Aaron and Axl are dropped onto the Colossus of Ultimate Destruction's head, but their attempts at weakening the Colossus of Ultimate Destruction prove futile until Clay and Merlok 2.0 (whose consciousness was downloaded into a robotic body dubbed "Mechlok") join the battle . Clay uses his magic to create a combo power that turns the Colossus into glass and he technopathically manipulates the Fortrex to strike the Colossus of Ultimate Destruction in the heel, resulting in the entire Colossus crumbling to pieces, killing Monstrox, petrifying the entire Stone Monster Army, and returning Jestro to his normal form . The Nexo Knights celebrate at Knighton Castle and Clay becomes determined to find his mother . Meanwhile, Jestro and Roberto are cleaning up the remains of the Colossus of Ultimate Destruction . Having avoided petrification, Ruina manages to steal one lone glowing fragment of the Colossus of Ultimate Destruction for her upcoming plans . </Td> </Tr> </Table> <Tr> <Th> No. in series </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Written by </Th> <Th> Story by </Th> <Th> Original air date </Th> <Th> U.S. viewers (in millions) </Th> </Tr> <Tr> <Th> 31 </Th> <Td> </Td> <Td> "Weekend at the Halberts"' </Td> <Td> TBA </Td> <Td> TBA </Td> <Td> August 21, 2017 (2017 - 08 - 21) </Td> <Td> 0.57 </Td> </Tr> <Tr> <Td_colspan="7"> <P> Despite the Nexo Knights' victory in the previous episode, the entire kingdom is in depression . Lance gains the idea to throw a party in honour of Clay saving Queen Halbert in order to lighten everyone's moods . However, Clay's petrified body is painted and placed in his remote - controlled battle suit in order to avoid suspicion . Meanwhile, Robin and Ava have to deal with Sir Bricklyn and his colleague Sir Grimace when they take some students from the Knighton Academy on a tour of the Fortrex (and constantly prank them) for the school field trip . Jestro gains the idea to ambush the Fortrex in hopes of cheering up the Cloud of Monstrox unaware that the knights are at the party . Fortunately, Ava is able to restore Merlok 2.0 to the Fortrex and he is able to provide the Knighton Academy students with a Nexo power that allows them to fight back against the Stone Monster Army, forcing them to retreat (as they do not have the Cloud of Monstrox to reanimate them) much to the Cloud of Monstrox's amusement . Back at the party, Macy loses control Clay's battle suit forcing the Nexo Knights to pin it down . After the party, they reveal the truth about Clay to King and Queen Halbert and they agree not to mention it to the rest of the kingdom . </P> Note: Fletch and Izzy from the Knights Academy book series make cameos with the students . </Td> </Tr>

When is season 4 of nexo knights coming out