40-year-old foreman Vital is chosen by Alix (25) as a guinea pig in the study she is carrying out in her father's factory. The boss's daughter soon finds herself falling under the spell of this reserved, enigmatic worker as he begins to open up to her, revealing his dreams of another life. One evening, they go for a ride on his motorbike. It's the beginning of a wild relationship that will see their social differences draw the lovers closer together as they tear them apart.