<Tr> <Th> 276 </Th> <Td> 10 </Td> <Td> "Jake the Starchild" </Td> <Td> Cole Sanchez </Td> <Td> Hanna K. Nyström & Aleks Sennwald </Td> <Td> March 18, 2018 (2018 - 03 - 18) </Td> <Td> 1054 - 283 </Td> <Td> 0.53 </Td> </Tr> <Tr> <Td_colspan="8"> Immediately after "The First Investigation", Jake is brought by his dying alien parent Warren Ampersand to his home planet and discovers that he must defeat an evil alien to save the inhabitants . Warren gives Jake a special belt, and wears one himself . As Jake uses his stretching powers, he becomes weaker and Warren becomes younger; the belts drain Jake's youth and energy . When Warren reveals his scheme and the fact that the planet and evil alien are not real, Jake switches the belts and tricks Warren into returning his powers and youth . Warren then tries to return to Earth after learning that Jake has children from whom he could siphon; Jake tosses him into a black hole, leaving him stranded on the now - empty space rock . </Td> </Tr> <Tr> <Th> 277 </Th> <Td> 11 </Td> <Td> "Temple of Mars" </Td> <Td> Diana Lafyatis </Td> <Td> Tom Herpich & Steve Wolfhard </Td> <Td> March 18, 2018 (2018 - 03 - 18) </Td> <Td> 1054 - 282 </Td> <Td> 0.53 </Td> </Tr> <Tr> <Td_colspan="8"> Finn is visited by Jermaine, who says that Jake is in space and they must rescue him . They head to Mars, where Normal Man (now King Man) has Betty working to "cure" her . King Man has them enter a cave to search for a device to save Jake, and they encounter a variety of puzzles . They meet Past Betty, who was supposed to go on a trip in a week but met Simon (changing her plans). Finn and Jermaine tell her that she needs to think about herself, and Betty "changes" her past so she left that day instead of a week later . The cave is actually the device, and they are reunited with Jake . Betty tells King Man that seeing Finn retrieve Jake has increased her interest in rescuing Simon; she has a plan to save Simon and retrieve Margles from GOLB, which frightens King Man . </Td> </Tr>

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