After escaping from CIA custody, the team recaptures Jane and convinces her to become a triple-agent within her old terrorist organization where she unlocks some major secrets from her past, while recent betrayals from both sides threaten to tear her and the team apart for good.

Weller and the team must race the clock to stop a series of escalating New York City bombings, while Jane is forced to go on an assassination mission to prove her loyalty... or suffer the consequences.