The Anti-Monitor (the Monitor's evil counterpart) is released into the DC Multiverse and begins to destroy the different Earths that compose it. The Monitor attempts to recruit heroes from across the Multiverse to fight back.

The Anti-Monitor, the Monitor's evil counterpart, is released into the DC Multiverse and begins to destroy the different Earths that compose it. The Monitor attempts to recruit heroes from across the Multiverse to fight back.