One thousand years from now the legendary Man of Steel inspires a group of emerging young heroes from the 31st century to band together and defend the newly formed United Planets. That is, if they don't kill each other first. In Season One, Legionnaires Bouncing Boy (Michael Cornacchia), Brainiac 5 (Adam Wylie), Saturn Girl (Kari Wahlgren) and Lightning Lad (Andy Milder) travel back in time to convince an awkward teen named Clark Kent (Yuri Lowenthal) to join their Legion of Super Heroes and battle their archnemeses, the Fatal Five. The insecure teen is, in turn, inspired by his new friends and, with their help, begins his journey to become the galaxy's greatest hero. Catching up two years later, Season Two presents Superman and the Legion with an even greater challenge: Kell-El, the Superman of the 41st century!