As the Torchwood team is reunited, Jack realizes he's the most vulnerable man on Earth. A flight to the United States turns into a desperate battle for survival.

Torchwood goes on the run and finds a new enemy, but as they launch a raid on PhiCorp headquarters, Jack must confront the mysterious Oswald Danes.

Jack faces a showdown with a man he thought was long since dead, while Rex takes extreme action to prevent the collapse of society.