Terry is hard put at trying to convince the other JLU members that Superman's lost it when Warhawk comes back from the dead explaining that he was operating his armor by remote control.
Although managing to get out of it and finding a new one is a feat worthy of Mr Miracle. Superman is then confronted and a fight ensues at the JLU HQ. Only 1 notable thing, Superman somehow manages to create spikes out of his chest while battling Micron. Superman later flees to his fortress of solitude and with Bruce Wayne's help the others follow. The kryptonite comes in handy in subduing Superman which allows the JLU to discover the menace behind his treachery: A starfish type alien with the ability to take over minds on contact.
A swarm of these takes the JLU by surprise leaving Terry to battle the JLU to save the world. First battle Batman vs Superman No kyptonite -> Batman wins and releases the Man of Steel from the mnid control. The two then take out the rest of the JLU and the star creatures.In the end the aliens are just returned to their homeworld(After they tried to enslave the whole world!?)