Worn out by 25 years together, the couple formed by Xavier and Sophie seem to have run out of steam. And the least we can say is that Sophie’s idea of inviting Adèle and Alban, their upstairs neigh- bours, doesn’t thrill Xavier! He blames them for their hallucinating lack of discretion during their frequent and wild nocturnal romps. In contact with their neigh- bours, Xavier and Sophie come face-to-face with their reality, only to be pushed into a corner by a somewhat... indecent proposal.