In Alaska, a fisherman sees a ghost and runs to tell everyone about it. Across the world, people witness similar ghostly apparitions as well.
At the Watchtower, the JLA examines the phenomena although they cannot figure it out. Two ghostly figures appear before the JLA and tell them to come back to Earth. Aquaman says that they remind him of the denizens of a lost city, banished from Atlantis. The JLA goes under the sea to examine the situation.
The team find a map of the world with seven spots marked on it. The map is of an Earth millions of years ago, with the continents still spread apart. Aquaman speaks of a demon-god in the centre of the Earth. Superman breaks from the JLA to go to the centre of the Earth to confront the demon.
The demon starts to take Superman’s will to live, but Superman manages to defeat it and leaves, after finding out that there are seven sacred ancient gods about to roam the Earth once more. At the seven places indicated on the map, the JLA meets the seven sub-demon-gods, and the JLA are quickly all dispatched.
The JLA is disheartened by the spirit of whatever is infecting the world. The two ghostly apparitions from before appear and offer the JLA an alternative: a spirit form, in which they will embrace the chaos to become more powerful. The JLA considers becoming evil to fight evil, with Superman as a key proponent to doing it, and they accept, becoming an evil spirit-like, arrogant JLA, all of whom assert their own superiority. They leave to fight the demons at the city of Seven Caskets.
In the midst of the brawl, the two twins strike thunder, and all of the demons and the JLA are knocked out. The demon-god rises, and offers ultimate power to the victor, thus the twins, who merge together into one aspect. Superman gets to the demon-god first, and demands the power for his victory, despite the fact that the twin demon still stands. He is given it, in which he then distributes the power to the JLA. The demon-god, upset about this non-evil use of evil power, gives up and flee to sleep for a few more million years.
Back at the Watchtower, the League wonder aloud whether they should find the god and dispense with it or not. Superman answers it best for sleeping gods to lie.