Division, now under the leadership of Ryan Fletcher, is tasked by the government to track down 30 rogue agents, nicknamed the Dirty Thirty, who refused the recall order. One such agent is Martin, who is selling his services to Chinese Intelligence to eliminate undercover CIA operatives. As Michael and Nikita attempt to bring him in, Nikita is faced with saving one of her own or risk an international incident when Michael - who in the middle of trying to propose to Nikita, is arrested for murder. Written by Anonymous

Rogue agent Wade, who used to train Division recruits before beating one to death for failing to kill his target, has been revealed to have kidnapped a young girl and trained her as a child-soldier. While he prepares her for battle, Nikita and Alex try to help the girl and reunite her with her family before she kills the Pakistani ambassador. Written by ab1995

Mia, an undercover Division agent investigating the domestic terrorist group, Third Wave, is arrested during an FBI raid. When Nikita and Alex spring her, she turns on them, revealing to having lost faith in Division and having joined Third Wave's cause. But as Division discovers, Third Wave's leader is in league with the head of a security firm, using the group to attack a U.S. Senator to make more money. Written by ab1995

A former agent now working for Amanda springs Owen from a Russian prison, who escapes and contacts Nikita for help. After a biohazard is released inside Division, Birkhoff and Sonya suspect a mole working for Amanda on the inside. Sean fears for Alex's safety. Written by ab1995

Undercover for six years, rogue Division agent Markov has been elected President of Uzbekistan and plans to kill the President of the United States. Ryan informs the team that the President has threatened to dismantle Division if the public finds out about them and their rogue agents, and must figure out how to save the President's life without alerting her of the danger. Meanwhile, Alex uncovers a murder plot against Owen. Written by ab1995

Nikita and Michael capture Cyrus, an arms dealer, who is purchasing a weapon-jamming device for Ari. Nikita convinces Ryan to let them use Cyrus as bait to capture Amanda but Cyrus manages to escape the trap. However, when Amanda double crosses Cyrus, his only hope for survival is Nikita. Meanwhile, Birkhoff is hot on the trail of Amanda's mole and Alex starts to unravel. Written by ab1995

In order to stop Amanda from killing Sonya, Nikita, Michael and Ryan use Sonya to find Amanda's hiding place and Birkhoff sets a trap for the second mole while he tries to deactivate Sonya's kill chip. Michael confronts Alex about her drug use. Written by ab1995

Nikita and Owen face off against a rogue cleaner named Liam (guest star PEDRO PASCAL - The Good Wife), while Michael takes a new position at Division. Michael and Nikita's relationship becomes strained as he watches her work with Owen.

Ryan dispatches the team to rescue a woman (ANNA HOPKINS) kidnapped by a rogue agent (MATT BUSHELL). Nikita is confused when Michael sends Owen into the field with her.

Michael resumes his role inside Division. Michael, Alex and Ryan follow Nikita into Kosovo on a dangerous mission, but the outcome has far-reaching consequences for Division.

After Amanda frames Sean for murder, Nikita comes up with a plan that could either save him or cost him his life. AMANDA SCHULL (Pretty Little Liars) guest stars.

Ari (PETER OUTERBRIDGE) seeks help from Division and Nikita and Michael are stunned when Ryan considers it. Sean is jealous of Alex and Owen's relationship.

When Nikita and Amanda are both captured, the two must work together to escape. Owen is furious with Michael after Michael assigns Alex to be Nikita's backup instead of him.

Amanda holds Alex hostage and tells Nikita she will release Alex in exchange for Ari (PETER OUTERBRIDGE). In captivity, Alex befriends a fellow prisoner, Larissa (OLGA FONDA).

Nikita decides Division should take on a government mission in Paris. Alex and Birkhoff are shocked when they come across a secret so big it could blow up Division - literally.

Nikita and Michael learn of a new prosthetic hand that could have Michael back to his old self, but it comes at a steep price. Meanwhile, Alex and Sean are tasked with investigating who inside Division is behind a mutiny that ends in bloodshed. Written by Anonymous

Alex confesses to Birkhoff her desire to leave Division. Amanda begins providing Owen with something he was never able to find - memories of his real past.

Subjected to Amanda's horrific mental conditioning process, Nikita is sent on a terrible trip through memory lane. In the process, she learns Amanda's deepest, most guarded secret.

Dirtied with Division blood and destruction, an emotional Alex reverts to old ways and violently strikes out. Birkhoff struggles with his own personal losses.

Nikita, Michael, Alex and arms dealer/reformed rogue agent Cyrus (ISIAIH MUSTAFA) stage a daring operation at the tightly secured G20 economic summit.

Michael questions Nikita's commitment to a life beyond Division's web - and he's not the only one with doubts. Alex considers an intriguing offer from a Nobel Prize winner.

In the season finale, Amanda puts her final plan in motion and forces Nikita into a life-threatening situation where she has to choose between saving Michael ... or saving herself.