After being infected by an alien plant, Perry White gains super powers and goes after Superman.; When giant ants invade Metropolis, Superman uses Red Kryptonite to alter his head to resemble an ant's, so that he can communicate with the ants, who have kidnapped Lois Lane. He learns that they have come to warn Earth of the dangers of atomic war, which destroyed their home world.; Jax-Ur tricks Superman into releasing him from the Phantom Zone to save the people of Atlantis from a plague. He then uses the opportunity to create Jewel Kryptonite, which allows the Phantom Zone prisoners to focus their thoughts to affect the outside world.; Superman releases Quex-Ul from the Phantom Zone since he has served his sentence, but Quex-Ul vows revenge on the son of the man who pronounced him guilty. However, when Quex-Ul displays heroic behavior, Superman wonders if he was truly guilty and travels back in time to Krypton to witness Quex-Ul being hypnotized into believing himself guilty. When Supergirl tells Quex-Ul he is innocent, he sacrifices himself to keep Superman from being exposed to a Gold Kryptonite trap he has set for him. In doing so, Quex-Ul loses his powers and memory, so Superman sets him up in a new life in Metropolis.; Superboy attempts to "vaccinate" himself against Kryptonite.