One weekend, Kawamura, a regular employee in sales, takes his only daughter, Haruka, to the villa owned by the managing director of a client company, Odozaki. However, the managing director has to take on some urgent work, so Kawamura and Haruka spend the night together. However, Haruka falls asleep and is defenseless, which ignites Kawamura's lust and he ends up raping her. ...And so the reversal of the inequality between them begins.