The diabolical Dr. Sivana has trapped Captain Marvel under the Rock of Eternity and stolen the power of Shazam for himself! The Golden Age Superman of Earth-2 has already fallen and now the Man of Steel of Earth-1 is next. Can even the greatest heroes of the DCU somehow find a way to stop a madman with the power of the gods?! Featuring appearances by Mary Marvel and Captain Marvel, Jr.
The Lex Luthor of Earth-1 and Lex Luthor of Earth-2 team up with Ultraman, Superman's evil doppelgnger from Earth-3. Not even the combined might of two Supermen may be able to stop this triad of evil. Unless, that is, they get a little help from a bold new hero--Lex Luthor?! All will be revealed in this must-read pre-Crisis adventure!