Officers Nick Barron and Ben Chartier patrol the streets of Montreal. Ben works for Internal Affairs, spying on his squad, when he learns there is a mole in Station 19. Meanwhile, Nick begins investigating the fate of his father, who disappeared when Nick was a teenager.

Daniel Farrell is a young widowed father who is navigating mourning and parenting Tyler, his adolescent son. Father and son have a great relationship so Tyler can't wait to confide to his dad that he as a crush on a girl in his class.