Yann, a famous sailor, adores his daughter Céline. Enraged by the infidelities of his son-in-law Fabrizio, he kills him during an altercation. Thanks to his ingenuity, Yann manages to use the events to frame a group of environmental activists who happen to be there at the same time...

Diane Di Biaggio, brilliant head of a wedding planning agency and engaged to Alban, finds her past brought back to life when Kevin, a former lover, threatens to reveal an inconvenient truth. Ready to do anything to protect her reputation, she discreetly plans his death, which turns into a road accident.