Nikita and Michael plot to take down Division and Oversight. Amanda, who is now running Division, enlists Alex's help to stop them.

Nikita and a reluctant Michael join forces with Owen, who is searching for the mastermind behind the Regimen.

Amanda convinces Alex to kill a man who used to work for Alex's father. But when Nikita disrupts Amanda's plan, Amanda fights back and takes what Nikita loves most.

Nikita is stunned to hear her old Division partner Kelly has escaped from a Turkish prison, having believed Kelly died when Nikita fled Division.

Michael wants to help a woman he once romanced under Division orders, who is in danger.

After Birkhoff finds Nikita's birth certificate, Nikita and Michael track down her father. Percy tells Alex the black box could help her avenge her father's death.

Amanda intercepts messages between Nikita and Ryan, who is in prison and has learned how Oversight is funded.

Michael helps Cassandra after hearing General Tupelov will kill her unless she returns money she allegedly stole, but Nikita is suspicious.

Sean captures Birkoff and when he won't reveal where Nikita is hiding, Amanda tortures him.

Nikita turns to Owen to help her track down another black box, but discovers Owen is working for an unlikely employer that could jeopardize her whole operation.

Alex's mission to take down Gogol comes to a head as she infiltrates her childhood home and faces ghosts from her past.

Sean attacks Nikita and Michael to protect his mother. Percy gets the upper hand on Amanda and threatens to level Division unless she releases him.

Nikita must decide if she will try to save Division. Sean turns to Nikita, Michael and Alex for help.

Percy threatens to kill Nikita's mentor, so she uses Madeline to send a message. Amanda tells Alex it's time to reveal Alexandra Udinov to the world.

Nikita is shocked by what Carla recounts of the night Nikita was arrested. Alex shows up at a Zetrov press conference to make an announcement.

Amanda reluctantly offers Nikita a deal: Stop Percy from murdering Division's agents and Nikita can have Ryan.

Michael is furious when he discovers a secret that Cassandra kept from him. Alex makes a last-ditch effort to find her mother.

Amanda and Ari prepare to take over Zetrov. Alex surprises Ari by showing up at the board meeting with an old and powerful friend.

Nikita is captured and tortured by someone she previously targeted, and Percy continues to play mind games with Michael, Alex and Sean, pushing one of them to the brink of death.

After losing his life savings to Percy via a plan gone wrong, Birkhoff hacks into an old network which trips a trap set by the FBI.

Nikita opposes Ryan's plan to go to the CIA and is surprised when Michael takes Ryan's side. Sean is shot by Percy's men, shaking Alex to the core.

Percy threatens to set off a nuclear explosion unless his demands are met. Nikita realizes the best way to stop Percy is to go into the belly of the beast: Division itself.

Nikita and Michael invade Division in an attempt to capture Percy, and Alex and Sean get caught in a deadly gunfire battle with the U.S. Marines.