Four adult couples reveal the everyday intimacy and private kinks they share only with their partners. M.Y., 23, is a shy medical clerk who unleashes her pent-up desire and loud moans at home. E.I., 24, is a beautiful office worker whose confident manner contrasts with her sexual shyness. S.A., a 20-year-old university student, is cute, clingy, and intensely dependent on masturbation and sex. R.M., 24, is a lusty cook who gives everything through service, domination, and uninhibited sex. Their natural, wildly explicit private recordings are presented as candid couple documentaries.