When Adam, an alien with the power to change memories infiltrates the team, the entire dynamic of The Hub shifts. With Captain Jack caught up in memories of his lost family, Gwen struggling to remember Rhys, and Ianto convinced that he's a murderer... it costs the entire team dearly to rid themselves of Adam's influence.

Deep in shock, the Torchwood team face their darkest hour. Attempting to put things right, Captain Jack unleashes a primal force that uses Torchwood as a conduit to wreak havoc across Earth.