An undisputed fan of tuning, Philippe is extremely involved in his passion, at the expense of his family. In fact, he spends most of his time improving his machine, a Punto Tuning Cup Diablo, and wants to be recognized in this industry. One day, during a competition, he finds himself facing a major challenger, Diego, his sworn enemy.

The series follows the adventures of lighthearted Jean-Paul Moulin, a police Commissaire, and his team as they solve crimes.