Borderline, a film version of the novels Borderline and La Brèche, tells the story of Kiki at various stages of her life. With her mother institutionalized, she is raised by her grandmother, where left to her own devices, she takes refuge in school. Her life before 30 is a far cry from fairy-tale. Sex and alcohol are her only outlets and her daily reality. She goes through men one after another.

Camelia, an escort with a troubled past, is newly employed at an erotic massage parlour in eastern Montreal. Met coldly by her competitive new colleagues, she struggles to establish a clientele while maintaining her dignity.

Louis, Éric and Daniel are inseparable. They are young, reckless and live at 100 miles an hour. Quickly, children's games take the path of small, disorganized crime. Their friendship will be put to the test. A tender and offbeat look at the turbulent and intoxicating period of the transition to adulthood, with the city of Quebec and its 1970s and 1980s as a backdrop.