Ver en Cuevana. The husband of Countess Manon Moreau is found murdered. André Rabatin, who belongs to the same club as Count Moreau, is the suspect. Rabatin, a old-school gentleman, affirms his innocence to the widow and claims that the death of the count must have been a tragic accident. Manon believes Rabatin and begins to fall in love with him. But Rabatin himself suspects that she has murdered her husband.