It's a sweltering midsummer. Ken's brother-in-law is not doing well in his job search and is shunned by his family. One day, as he is feeling frustrated, he witnesses his younger brother and his wife making out. His lust for his sister-in-law, the young wife Serina, gradually grows, and he ends up violating Serina. Serina's Serina skin, covered in sweat and bodily fluids, glistens lasciviously as he is violated. What is Serina's reaction to Ken's decision to leave home?