As a heat wave brings a Marseille neighborhood to a boil, three roommates gleefully meddle in the lives of their neighbors from their balcony. Until a late night drink turns into a bloody affair.

Oscar is 19 years old on the day he takes the entrance exam for a prestigious dramatic arts school. After months of rehearsals with his best friend, who acts as his cue partner, the scene he thought he had mastered gradually slips away from him. As the performance unfolds, the boundary between reality and fiction stretches, putting his dream and his friendship to the test.