*The Flash (Barry Allen) attempts to travel from the 30th century to the 20th, only to accidentally end up on Earth-D, an ethnically diverse Earth featuring versions of Flash, Batman, Robin, and others, as well as the Justice Alliance of America. As the anti-matter wave approaches, Pariah brings an assortment of heroes from Earth-1 to help the JAA fight the threat. The JAA is destroyed, though millions of Earth-D civilians are successfully transported to Earth-1
*Source: www.comics-db.com
Takes place between Crisis On Infinite Earths #3 and 4.