Rin lost her husband in a traffic accident. After hearing the sudden news of his death, she stopped drinking every day and was in mourning when one day her father-in-law, Yoji, came to visit her. Yoji had been extremely harsh towards Rin even before her husband died, and now he takes out all of his anger over the loss of his beloved son on Rin. Yoji then forces Rin to drink alcohol. Yoji knew... that when Rin drinks, she transforms into a promiscuous woman. A few minutes later, with the alcohol reaching every corner of her blood, Rin is having sex with her father-in-law whom she hates so much...