 When Superman steps into the transformation chamber, the rest of the Fortress is bathed in red light.The three villains realize too late that Superman, knowing of Luthor's treachery, altered the transformation process to expose everyone outside the chamber to the red light, thus canceling Zod, Ursa, and Non's Kryptonian powers.With Lois' help, Superman is able to send the criminals into the bottomless depths of the Fortress.