In the wake of Kagame's terrorist attack on the city, everyone seems to have distanced themselves from the blast: Kiera has distanced herself from Carlos and the department, Alec has moved out of the farmhouse and now lives in the city and Sonya seeks to move Travis further away from the organization by asserting herself as leader of Liber8. Under Kagame's orders, Sonya shoots Travis in the hospital as he tries desperately to reason with her. She flees as he is rushed into the OR.
Unable to save him, Travis has just been declared dead when his heart restarts on its own. In a berserk rage, he massacres everyone in the OR, fighting his way out of the hospital before finally being captured and detained by security.
Meanwhile, Kiera has been moonlighting as a one-woman vigilante, breaking up pockets of Liber8 violence outside of the confines of the department. Alec ignores Kiera's many phone calls and attempts to contact him after he revealed that he is in fact the one who sent her back in time.
Kellog and Kiera meet at a bar where she reveals her true motive for their meeting: she needs money. Kiera blackmails Kellog for what she needs, continuing their uneasy alliance.
During an outdoor press conference, the city's mayor is assassinated. Inspector Dillon and Carlos feel the pressure as the city demands justice in the wake of her death. Kiera and Carlos meet, where he attempts to get her back into the department to help investigate the mayor's assassination. He notes the assassination has the marks of Liber8 all over it. After some convincing, Kiera is back on the team.
Back at the Liber8 compound, Garza discovers that Travis has been captured alive and has been taken to a prison hospital, much to Sonya's outward shock and private dismay. Sonya delays his rescue in an effort to keep the heat off them in the wake of the mayor's assassination.
CSIS Agent Gardiner comes sniffing around for Kiera at the Vancouver Police Department. Dillon refuses to cooperate until he understands why Gardiner has such an obsessive interest in her. After a tense confrontation, Gardiner leaves without any information.
Alec continues to ignore Kiera's call and texts. When his mother comes to visit him, demanding to know why he's left all his work, he continues to assert his distance from her. She leaves, disappointed. Kiera, using the invisibility function in her CPS suit, sneaks in undetected with Alec's mom and drops off a hard drive of video footage from the crime scene. Using his computer and her CMR to reconstruct the assassination, Kiera pieces together exactly from where the Mayor was shot from all available surveillance footage at the crime scene.
Kiera and Agent Gardiner have a heated confrontation at gunpoint demanding answers after seeing her vanish into thin air after the bombing. Carlos interrupts them before Gardiner can get any answers but promises her that they're not done.
On a tip from Carlos, Kiera follows a prominent gang member as a possible assassin behind the murder. At their nightclub, she finds the gun from the crime scene. They arrest the club owner despite his protestations that he's not involved.
Meanwhile, Jim Martin, Carlos's old friend and now a candidate for the vacant mayoral seat, meets with Sonya at the Liber8 compound. With the help of a hefty bribe, Jim agrees to support Liber8's objectives once he wins the mayorship. Travis and Julian connect with each other in prison, forming a necessary alliance under the rogue manipulations of Agent Gardiner.
Alec and Kiera finally meet in person. Still torn by the message he sent himself 65 years from future, he's unsure if any of his actions are against the intentions of the message from his future self and offers her little answers for why she's here. Kiera gives him a piece of the device that sent her back in time. They resume their tenuous connection as Kiera ponders the future Alec Sadler's plans.
In the future, we see Alec, now an old man, recording his message to his younger self. He confesses that he has gone down a dangerous path, taking the whole world with him. He instructs Young Alec to prevent this future from happening. He then selects Kiera's profile from the CPS database, inserting his encrypted message directly into her CMR.
Alec, Kiera, and Carlos talk about blurring the lines between good and evil.
In 2077, Alec Sadler layers the plans to right the devastating wrongs of his legacy by sending his son to ensure that Liber8 travels back in time.