In order to save Will's life, Sydney and Vaughn must destroy a familiar looking Rambaldi device, while Jack makes a risky deal with Khasinau's representative, Mr. Sark. Meanwhile, the CIA believes that one of their own is a mole for "The Man"; the Alliance comes to a decision regarding the fate of Emily Sloane; Dixon's suspicions about Sydney intensify; and Sydney finds herself face-to-face with "The Man."