The Legion of Super-Heroes devise a plan to escape the prison created by Nardo, the space alien, and his androids. Matter-Eater Lad escapes on his own accord, but gets caught and is punished by being put to death. Superboy, Mon-el, and Ultra Boy arrive in time to save him, and the rest of the Legion, but Matter-Eater Lad still gets hit by the ray guns. Something occurred that the ray gun didn't kill him but made him very overweight.