[2] Thierry, Gérard, Francis and Daniel, friends and former HEC Paris classmates, go to an evening organized by the School.

Gérard and Thierry are business partners who are accused of stealing a safe from a wealthy tycoon in this situation comedy.

A practical joke backfires when the two make their colleague Daniel believe he has won the lottery.

The owner of the safe calls the police, who chase after the scheming duo.

Monique is the sultry police commissioner and former flame of the robbery victim who investigates the bizarre case.