Sent back in time from the 31st century to protect the United Planets, a team of teenage super heroes accidentally travels too far back. The Legion of Super Heroes enlists teenaged Superman who is unsure of what to do with his future to help them fight evil. Lightning Lad, Saturn Girl, Brainiac 5, Phantom Girl, Bouncing Boy and Timber Wolf face adventurous challenges together while teaching the young Superboy how to be a hero.
