The show centers on Michael Britten (Jason Isaacs) a police detective living in two separate realities after a car accident. In the episode, Michael Britten finds out the truth about the car accident that caused his split realities, and seeks out those responsible for it. He finds out that Captain Tricia Harper (Laura Innes) caused the accident, alongside Ed Hawkins (Kevin Weisman) and Captain Carl Kessel (Mark Harelik).
In his "green reality" (where his son is alive and his wife is dead), Detective Michael Britten (Jason Isaacs) sits in a prison cell temporary for killing Detective Ed Hawkins (Kevin Weisman), who caused Michael's car accident. Meanwhile, his partner in the "green reality", Detective Isaiah "Bird" Freeman (Steve Harris) finds heroin that Hawkins, under orders from Captain Kessel (Mark Harelik), had placed in a self storage unit. Meanwhile, Captain Tricia Harper (Laura Innes) shoots Carl Kessel in a hotel room, making it look like a suicide to cover up her involvement in Michael's accident. Michael is freed from the cell and Kessel's body is found.
Michael regains consciousness (after having passed out from a gunshot wound when Ed Hawkins was chasing after him) near a dumpster in the "red reality" (where his wife is alive and son is dead). The still-alive Detective Hawkins takes Michael to his car, but Michael flees after attacking Hawkins and causes a car accident. Michael finds his therapist in the "red reality", Dr. John Lee (BD Wong), forces him to sew up the bullet wound, and takes him to the self-storage unit to show him the heroin stash. Seeing no heroin, Michael then locks Lee in the containment center and contacts his partner in the "red reality", detective Efrem Vega (Wilmer Valderrama). Vega secretly takes Britten to his house but, upon returning to the police station, is convinced that Michael is unstable and allows Michael to be captured. Michael is first taken to the hospital to receive medical treatment and then goes to jail.
Harper visits Michael in jail. When Michael notices the caller ID of an incoming call matching Kessel's hotel room pseudonym, he realizes Harper is part of the conspiracy and attempts to strangle her. Later, Michael is visited by himself from the "green reality" who leads him to the jail door. Past the door, Michael first witnesses Kessel's murder and Detective Vega, in a penguin suit, shows Harper's heel breaking in the process hinting that this can be used as hard evidence to place Harper at Kessel's murder. Next Michael briefly meets his wife, Hannah (Laura Allen) in a restaurant before he finds his "green reality" self sleeping in his bedroom. He – his "red reality" self – lays down in bed as well and merges with his "green reality" self before waking up in said "green reality".
In Harper's office, Michael confronts her about her involvement in his accident, pulling out his gun to shoot her. However, he instead lets Bird and another detective arrest her. Later, Dr. Evans applauds Michael's apparent rejection of the "red reality" and, when Michael suggests his fantastic experiences may have simply been a dream of the "red reality," Dr. Evans warns him not to create a third reality. She suddenly goes still. Michael, confused, goes through her office door and finds himself in his bedroom. He goes downstairs and finds both his son, Rex (Dylan Minnette), and wife alive. Concerned about Michael's odd behavior, Hannah asks if he is okay. He replies, "I'm perfect," and closes his eyes.