As a troubled teenager, Nikita (series star MAGGIE Q) was rescued from death row by a secret U.S. agency known only as Division. There she was erased from society & trained to be a spy & assassin. After being betrayed by the only people she thought she could trust, Nikita escaped from Division. Now, after three years in hiding, the rogue Nikita is seeking retribution & is making it clear to her former boss, Percy (series star XANDER BERKELEY), & former friends & colleagues Michael (series star SHANE WEST) & Birkhoff (series star Aaron Stanford) that she will stop at nothing to expose & destroy their covert agency. Meanwhile, Division continues to recruit & train other young people who have been ostracized from society, among them Jaden (series star TIFFANY HINES) & Thom (series star ASHTON HOLMES), erasing all evidence of their former lives & turning them into cold & efficient killers. One of these new recruits, Alex (series star LYNDSY FONSECA) is a beautiful girl with a violent past & a story not so different from Nikita's. Reluctant to accept her new fate, Alex is given special attention by Amanda (series star MELINDA CLARKE), a master manipulator who can turn any ugly duckling into a swan & harden any bleeding heart into that of a killer. ...

Owen (recurring guest star DEVON SAWA) leaks secret information from Division's black boxes to the media, revealing that the U.S. government was responsible for an assassination in Chile. As a result, Percy frames a C.I.A. agent, Ryan (guest star Noah Bean -- Damages, Dark Blue) for the crime. Nikita & Owen go to Chile to rescue Ryan from mercenaries &, in doing so, end up getting captured. Nikita reveals the secrets of Division to Ryan in an effort to save all of their lives. Back inside Division, Alex spies on Percy & Birkhoff & witnesses a side to Percy she has never seen before. ...

Alex informs Nikita that Division is sending her on her first mission to kill the leader of a crime syndicate. Alex is uneasy about taking someone's life but is reassured by Nikita who insists on helping her with the kill order. Birkhoff discovers the shell program that has been used to connect to Nikita in the outside world & informs Percy & Michael there is a mole inside Division. When the mission doesn't go as planned, Nikita makes a quick decision in an effort to clear Alex's name. Inside Division, Jayden attempts to reveal Alex as the mole but Thom steps in. ...

Now an agent, Alex gets a new apartment & is given a cover job. She meets her new neighbor, Nathan (recurring guest star THAD LUCKENBILL -- The Young & the Restless, 8 Simple Rules), who invites her to a party at his house. Nikita warns Alex about getting too involved with people but Alex struggles between her duties at Division & living a normal life. Nikita realizes Division has implanted a kill chip in Alex's head & sets out to gain control of the chip. Plus, while interrogating Birkhoff, Nikita stuns Ryan (recurring guest star NOAH BEAN) by revealing a secret. ...

Alex's first assignment is a group mission to kill the Prince of Georgia at a museum gala. After Alex tells Nikita about the order, the two devise a plan to foil the assassination. However, Nikita trusts the wrong person & their plans are foiled, resulting in a st&-off & Division is alerted that Nikita is in the building. Percy sends Michael in to kill Nikita. ...

While out on a mission for Division, Alex runs into Irina (guest star KSENIA SOLO -- Black Swan, Life Unexpected), a woman from her past. Alex tries to help Irina break free from her captor, but her old friend double-crosses her & turns Alex over to Vlad (guest star MARK IVANIR -- Holy Rollers, In Face of the Crime), a Russian mobster with a debt to settle. Nikita realizes Alex is in trouble & sets out to save her but runs into Michael who is searching for his missing agent. Realizing she can't compromise Alex's secret, Maggie must find a way to work with Michael to save Alex without getting her friend killed by Division. ...

In order to speed up her healing, Amanda sedates Alex after her last mission then takes advantage of Alex's drugged condition to question her about the secrets Amanda believes Alex is keeping. Nikita realizes Alex is in danger & tries to secure her another identity to smuggle her out of the country. However, Nikita's contact double-crosses her & she comes face to face with a surprising opponent. Meanwhile, Michael becomes suspicious of Alex & asks Birkhoff to investigate her. ...

Michael confronts Nikita in her lair & reveals that he knows Alex is the mole. He tells Nikita that she has 24 hours to find Kasim (recurring guest star HAAZ SLEIMAN -- Nurse Jackie), the man who killed Michael's family, or he will tell Percy about Alex. ...

Owen (recurring guest star DEVON SAWA) returns with information on one of Percy's black boxes. Nikita goes to London with him to retrieve it but notices that Owen is acting strangely. Owen tells Nikita that he wants to release the contents of the black box & when Nikita disagrees, he turns on her. Meanwhile, Percy finds out Nikita is in London & dispenses Michael to kill her. Also, Amanda overhears Jaden arguing with Alex about the escape tunnels so she hooks Alex up to a lie detector to get the truth out of her once & for all. ...

Nikita believes it's getting too dangerous for Alex at Division & decides it's time Alex disappeared. Alex agrees, but before the plan can be put in motion, she & Jaden are assigned to an overseas mission to stop the son of a foreign president (guest star EDI GATHEGI -- Twilight, Gone Baby Gone) from selling a newly developed nerve toxin. When things go awry, Alex must decide whether to try & save the mission.. . or save herself. ...