Plot summary
M'gann's Bio-Ship has decided to retire on Mars and has an offspring named Baby to take care of the Team. Meanwhile, Garfield is haunted by visions of Brion, the Outsiders, and all the people he is afraid of losing. Someone who appears to be M'gann saves Garfield's mind (caused by the green Martians' psychic blast) and encourages him to seek help for his trauma before he is rescued. She is actually Saturn Girl, and her intervention was not part of the Legion's mission. In a mid-credits scene, Superman helps Lois Lane with their son Jon.
Credits
Adapted from Wikipedia contributors, List of Young Justice episodes. HTML formatting and reference markers removed.