While on location in Montreal, a French actress tries to reconnect with her son, who has been studying in the city for the past few years. But after witnessing a troubling event, he experiences a renewed desire to learn his father’s identity. He confronts his mother with the question on his birthday, unaware the film she’s shooting was created specifically to provide answers. Meanwhile, an ambulance driver haunted by his past attempts to stay on course, while a kind-hearted nurse watches over him from a distance, all while running the ER. At Ville-Marie Hospital, their four paths cross, changing each one of them forever.