Thirty years after their last vacation together, Peter and Romée invite their old group of friends to a private island to celebrate Romée's 50th birthday. The purpose of the journey quickly changes when Peter is blackmailed just before arriving with a video from thirty years ago. Only one thing is certain: the person who is blackmailing him is on the island.

The first summer: It's the morning after the fact and the boys realize all too well what happened the night before. When Sophie doesn't seem to remember anything, they burn the tape with the evidence. Meanwhile on the island: now that Didier is also aware of the video, the three men put Luk to the test. Didier confesses to Peter and Stef that he already met Lia ten years ago.