It is in the corridors of their municipal swimming pool that Bertrand, Marcus, Simon, Laurent, Thierry and the others train under the relative authority of Delphine, former glory of the basins. Together, they feel free and helpful. They will put all their energy into a discipline previously owned by women: synchronized swimming. So, yes it's a weird idea, but this challenge will allow them to find meaning in their lives...
A gangster known as "Samurai" wants to turn the waterfront of Rome into a new Las Vegas. All the local mob bosses have agreed to work for this common goal. But peace is not to last long.