Selfish and grumpy director Tommas (Franz Rogowski) finishes shooting his latest film. On this occasion, he throws a party, but his husband Martin (Ben Whishaw) does not feel like celebrating and quickly leaves. Left on the dance floor, he then meets teacher Agathe (Adèle Exarchopoulos) and they move the after-party to her apartment, where they both have sex. When a man returns home, he bluntly confesses to his partner what he has done. He also reveals that he felt something he had not experienced for a long time and the woman excites him. Martin seems to downplay the situation and puts it down to professional tension, but he feels that Tommas is falling in love with Agathe.