The Legion find out about the Monolith of Evil from Solomon Grundy, who reveals it brought him to life. The Legion trick Superman, Black Vulcan, and Hawkman into going to the center of the Earth and recover the Monolith. The rest of the SuperFriends battle the Legion equipped with the Monolith. However, it is neither good nor evil, but influenced by whoever holds it. Wonder Woman telepathically controls it long enough for the SuperFriends to gain the advantage, but the Legion finds out it won't hurt them to use it on themselves and use it to escape.