The Thors of every Battleworld domain, united as one! Whenever there's trouble anywhere on Battleworld, the Thors bring the thunder as Doom's lightning-wielding cosmic cops. But a string of mysterious murders leaves some of them asking questions that may unravel all of reality! Thors you know (including Ultimate Thor, Beta Ray Bill and the Odinson himself) team with Thors you don't (say hello to Groot Thor) and place their lives on the line to hunt...