The seemingly peaceful seaside town of Malaterra is thrown into chaos when the body of a young boy is found.

When the gendarmerie discover a large amount of money in Nathan's room, Karine questions his sister; as the local and national press travel to Malaterra, the atmosphere between friends and neighbours turns to suspicion.

Pierre Viviani is taken into custody; Karine finds herself torn between her friendship for her family and the needs of the investigation.

The discovery of a torched boat makes the investigation restart, but once again leads to the closure of the beach; affected by the decline in tourism, traders in Malaterra begin to lose patience.

Martine Vaneste's past is exposed in the national press, the community of Malaterra decide to make a targeted attack.

After Nathan's funeral brings the community together, his skateboard is found; Captain Rotman keeps a watchful eye on Father Clement.