Season 0 of Plan B premiered on October 6, 2021.

Season 1 of Plan B premiered on May 4, 2017.

The day when Philippe discovers an incredible small company called Plan B that offers the possibility of going back in time, he does not hesitate. Since, the love of his life and companion for the past six years, has left him his life has lost its meaning. With the tremendous power he wields thanks to Plan B, he attempts to save his relationship, his law firm despite his shady business partner/friend and his dysfunctional family. He goes as far as manipulating them to achieve his goals. But Philippe soon realizes that even the smallest choice has repercussions—as uncontrollable as they are unexpected—on his life and the lives of others. And even though Philippe can stop tragic events before they happen, he cannot erase the memories and the emotions associated with them. Nothing will ever be without consequence again.

Season 2 of Plan B premiered on November 8, 2018.

The world of Florence, host of the number one morning show in Montreal, collapses when Marilou, her fifteen years old daughter, goes too far. Did this socially engaged feminist who used her notoriety and her microphone to create women’s rights defense projects failed her life’s most important project? When she is presented with “Plan B”, a time-traveling company, Florence, who feels immensely guilty and responsible, takes it as an opportunity to start over and save her daughter. These time-travels will bring her to question her choices as a mother of two, her choices on her career and her relationship with the father, with whom she is separated. Is she accountable for her daughter’s unhappiness? How far is she willing to go to save her?

Season 3 of Plan B premiered on October 27, 2021.

Thirty-nine-year-old cop Mylène is going through a rough patch after her split with Guillaume. What's especially painful is that she'll no longer see Justin, her ex's son to whom she's become deeply attached. On the job, she feels increasingly powerless in the face of the injustices she encounters daily. Her faith in her work is dwindling fast. Then during a routine intervention with a family in crisis, her life is turned upside down. Given the lack of proof, how could she and her partner have avoided the worst? With the power of Plan B, she'll do everything possible to alter the course of the drama unfolding between two civilians. Her journey brings her face to face with her own anger. Did she subconsciously choose this path to find out who she really is?

Season 4 of Plan B premiered on February 23, 2023.