Alex rejects his new role as the Chosen One, but then a sleeper threat in Vega forces him to spring into action and protect the ones he loves. Meanwhile, Michael meets with Gabriel one last time before the war between angels and mankind reignites; and Gen. Riesen and David Whele try to tie up loose ends.

Alex attempts to escape his responsibilities as the Chosen One by leaving Vega, but an encounter with Gabriel's forces leave him and Michael fighting for their lives. Meanwhile, Riesen goes too far in the name of security.

Alex begins his training with Michael, but soon after has a vision that causes him to go rogue during an Archangel Corps mission. Elsewhere, Claire goes out on a limb to protect Riesen, however she can't stop his long-held secrets from coming back to haunt him; and David makes a move to secure his power.

Alex takes on the not-so-easy task of trying to exorcise captive eight-balls of their angel possessors, and enlists Michael and Claire for help; David closes in on William's underground acolytes; at the same time, Riesen overturns David's plan to usurp power with a new alliance.