With the Thunderbolts lost in time, a new group steps in to replace them: the Dark Avengers! Featuring Dark Scarlet Witch, Dark Spider-Man, Trickshot, Ragnarok ... and Luke Cage? But as the T-Bolts battle Dr. Doom in the past for the fate of the future, Cage learns of the Dark Avengers" deadly new mission - and Skaar, son of Hulk, discovers the team"s secret agenda! As the Dark Avengers" operation sets off what will become known as The Cataclysm, things get worse when Songbird stumbles onto a conspiracy to destroy the team - plus Cage and the T-Bolts to boot!