Part 2 of 4. After an unexpected attack by Superboy in the past, the Legion of Super-Heroes escaped in the Time Bubble several years into the future and landed in Superman's time period. The Legion and Superman met for the first time which confused members of the Legion except for Brainiac 5. Superboy was able to follow the Legion and captured them as well.

Notes:

• "Dedicated to the memory of Edmond Hamilton."
• "Meanwhile..." one page text piece by Dick Giordano dedicated to the recent passing of E. Nelson Bridwell.
• Main Legion of Super-Heroes characters: Blok, Brainiac 5, Invisible Kid and Sun Boy.
• Flashback Legion of Super-Heroes characters: Cosmic Boy, Lightning Lad and Saturn Girl.
• All other 30th Century characters have cameo flashback appearances.
• Superman mentions meeting Superboy of Earth-Prime during the Crisis events. However, that Superboy "...went off into limbo."
• This cover is a homage of the cover of Fantastic Four #249 also drawn by John Byrne.
• Story continues from Legion of Super-Heroes #37.
• Story continues in Action Comics #591.