Faced with the trials and obstacles of life, the tight-knit community of Ste-Adeline has always remained united. But this time it's in shock and will have to face a situation that will confront the inhabitants with their contradictions. At the center of the scandal, Magalie, a teenager with a childish pout, Manuel, the adopted child of the village's emblematic mayor, and Isabelle and Chantale, protective mothers but powerless witnesses to a predicted tragedy. In Ste-Adeline, appearances are deceptive and the layers of a carefully maintained social veneer end up cracking, revealing the true nature of the inhabitants of this peaceful little town.

When Maria thinks she's at the bottom of the barrel, she discovers that this barrel has a double bottom: no job, no money, no worthy accomplishment and now a dying mother begging her to do something with her life. before his death! She has no other choice but to get back in hand and find a career ... But what can she do with a 7-year-old BAC in communication and no work experience? Believe it or not, she can become a substitute in a high school! Thus, Maria, 30, as responsible and stable as a 14-year-old teenager, returns to high school in the role of the one to whom she threw pieces of erasers: the replacement. Too jaded teachers, rebellious teenagers, intimidated or not sufficiently denounced, she will be confronted with the reality of teachers and young people today and, who knows, may discover a vocation.