A man gets turned on watching his wife with other men as long as she plays by the rules. When she brings home a a new stranger who likes to play his own games, the husband finds his marriage in jeopardy.
In Amsterdam, the violinist Emilia is married with Charles and they have a little daughter, Anna. Emilia is trying to sell the house that belonged to her deceased mother. One day, she is alone in the house changing clothes and out of the blue the client Leon comes into the room using the key provided by the real estate agent. Leon starts a seducing game with Emilia and they have a kinky love affair, affecting her relationship with Charles and Anna.