On a cold snowy night, scholar Seligman (Stellan Skarsgård) encounters a woman named Joy (Charlotte Gainsbourg) lying in the snow with bruises all over her body. The kind-hearted Seligman takes Joy home for recuperation, but he did not expect that what awaits him is a story full of twisted lust. The film unfolds slowly as Joy tells her story. When she was very young, Joy (Stacy Martin) discovered that she had a high sexual desire that was different from that of ordinary people. Her young ignorance and ignorance made Joy readily accept her difference. As she grew older, she began to boldly and unrestrainedly wander in the sea of lust, and even founded a club with her friends that specifically accepts "female addicts". Joey's first man was named Jerome (Shia LaBeouf). When Joey met Jerome again as an adult, she found that she was deeply in love with him. Tragically, Joey discovered that only Jerome's caress could not ignite her passion. Between sex and love, Joey fell into deep confusion.