Benjamin Barois (Vincent Lacoste) starts his medical internship in the service lead by his father, Dr. Barois (Jacques Gamblin). Feeling enthuastic, at first, he meets Abdel Rezzak (Reda Kateb), an other fellow intern who's from Algeria. However, he is soon caught up by the harsh reality of the hospital work. Indeed, during a night shift, Benjamin visits Jean-Michel Lemoine, a homeless patient who suffers from Abdominal pain. Benjamin tries his best to reassure him and prescribes him Analgesic but, because of the misfunctions of the device, he cannot do an Electrocardiography. The morning after, a colleague tells him that Mr Lemoine is dead.