Photographer O's lover takes her to a Château, where she is, like other women there, naked, humiliated by whipping, sexual abuse by men etc. When O leaves, her lover gives her to his much older step-brother.
In the middle of the crisis of rapeseed oil, the protagonist of this peculiar film, contagious, appears a side effect the less curious: when she gets horny she turns into a pink monster, a kind of Incredible Hulk.