Superman battles Doomsday in the heart of a volcano. Doomsday is revealed to be a modified clone of Superman. Batman probes the Cadmus conspiracy to destroy the Justice League.

The Justice League take on their opposite numbers in the Legion of Doom in a final battle revealing the Legion’s secret sponsor and the mystery behind their ultimate plans.

Batman doesn’t like the looks of Carter Hall, Shayara’s new boyfriend, when he learns that Carter Hall has connections to Thanagar.

In the future, Terry McGinnis learns the truth about his birth.