A dinner takes place in the house of an important entrepreneur. The attendees, three couple: the businessman and his wife, his best friend and his wife, his partner and his wife. The rules of the game are very clear. A closed scenario: The house. A murder: that of the businessman. Five suspects: All with apparent mobiles to commit crime, and a detective to make sense of the pieces and find the culprit. Through the interrogations with each of these five candidates for murderers, the reconstruction of what happened that night will put on the table the letters of a swing of prohibited, complex, disagreement, envy, jealousy and a turbid business.