At the end of the motor season, Mark Benton, which has just been voted the best driver of the year, rightfully celebrates his victory in the company of all his friends. During the evening, anxious not to see him back his wife Sally, he starts looking for him in the parking lot and down. There he discovers his wife struggling with two hooded men. Mark comes heroically, but is killed during the fight. Sally is thrilled: everything went as planned. Indeed, she had organized the ambush with her lover, Jack and Tom, the rival driver Mark. Later, at the funeral where she played the grieving widow, Sally met Vera, the twin sister of Mark, which she did not know until then the existence ...