On her first day at the Mount Royal Psychiatric Institute, Suzanne meets her team, including Mortimer, an intriguing intervention officer who must accompany her at all times. The arrival of a new patient puts the team to the test.

While carpooling, Suzanne and Mortimer encounter Mr. Dallaire, a patient from Wing D, on the streets of Montreal, and discover that he is in the midst of a crisis. Meanwhile, a newcomer with a mysterious past enters the Institute.

As Suzanne and Mortimer’s bond strengthens when she invites him to a party at her sister’s house. At the institute, Mr. Dallaire continues to open up.

Suzanne is forced to see Guylène, her adoptive mother. Back at the institute, Ms. Moisan's increasingly unpredictable behaviour causes a stir.

Suzanne confronts Mortimer about his mother, creating a rift between them. Meanwhile, Suzanne attempts to take control of her life.

Concerned about Mr. Villeneuve’s behaviour, Suzanne makes a surprising discovery that implicates a member of the team.

The whole team undergoes CPR training, which leads to a confrontation with Emilien. A former colleague of Suzanne’s resurfaces.

Suzanne’s daydreams corrupt her ability to work as she attempts to help a woman battling a psychological attack.

While resolving a crisis at her parents' house, Suzanne experiences tensions with her mother; Suzanne testifies at Mr. Villeneuve's trial.

Suzanne visits Evelyne and sees her mother again; Suzanne and Mortimer make changes to the D-wing, while the team prepares for a party.