An upper middle-class French family celebrates a birthday in a restaurant. In one evening and during one meal, family history, tensions, collective and separate grudges, delights, and memories both clash and coalesce.

1981. Hubert Bonisseur de la Bath, aka OSS 117, is back. For this new mission – more delicate, more dangerous and more torrid than ever – he is forced to team up with a young new colleague, the promising OSS 1001.