At 45 Inès does her best to be a model employee in her position as a salesperson for a cleaning product company, never getting the recognition she deserves or being paid fairly. While the young intern Mélody looks at her with indifference, Inès decides to ask her boss Patrick for her first raise. The situation gets out of hand, Mélody tries to intervene, and Patrick ends up with a broken skull. The accident looks a lot like a crime. What to do? Inès does what she does best: clean.