Justice League of America [JLA; Batman; The Flash [Barry Allen]; Green Lantern [Hal Jordan]; Hawkman [Katar Hol]; The Atom [Ray Palmer]]; Justice Society of America [JSA; Black Canary; Dr. Fate; Dr. Mid-Nite; Sandman [Wesley Dodds]; Spectre [Jim Corrigan]; Wildcat [Ted Grant]]; Enrichetta Negrini (cameo); Anti-Matter Man (villain); Solomon Grundy (villain); Blockbuster (villain)
Synopsis
People from Earth-1 and Earth-2 are being inexplicably transferred from one parallel world to the other, including Blockbuster and Solomon Grundy. At the same time, the Spectre discovers that the approach of the Anti-Matter Man is the reason for the transfers and will eventually cause the destruction of both worlds.