Mei has retired from the glamorous entertainment world and married into her husband's family. Although he was puzzled by the unfamiliar life such as taking care of his father-in-law who was suffering from dementia, he spent his days in good spirits. However, her sister-in-law, who has taken care of her father and brother in place of her mother, hates Mei and can't help it. And... finally, the sister-in-law tricks her father-in-law into attacking Mei. The escalating insidious and sexual treatment of her sister-in-law gradually reveals the true nature of a woman in the depths of Mei's heart...
