Bizarro comes up with a scheme to use three elements that will let them become giants. Bizarro already has the first element, then he and Sinestro split the moon open to get the second. Superman, Batman, and Robin capture them. The Toyman and Captain Cold launch an attack on the Parthenon in Athens, Greece to get the third element where and Green Lantern and Aquaman journey to stop them. Their capture is all part of the plan: Bizarro needs the Justice League computer to assemble the elements and create the growth formula. The four giant-sized villains easily defeat the SuperFriends and Captain Cold freezes them in an ice block and sends them into Saturn's core. Batman's automatic utility belt defroster thaws them out and they escape the planet's gas monsters and return to Earth. After Batman is able to disable the Justice League satellite's defense grid, he, Superman, Flash, and Green Lantern use the last traces of the growth formula to become giants themselves and thwart the giant-sized Legion villains. But again, Luthor bails them out at the end and they all escape with the aid of a decoy Hall of Doom.