Emi Asano's husband Shigeru fulfills his dream of becoming a novelist, and the couple enjoys their blissful married life. However, a man quietly harbors jealousy toward their happiness. Oda, the editor who launched Shigeru's career, becomes deeply attracted to Emi's pure heart and begins scheming to seduce her behind her diligent husband's back. A twisted love triangle unfolds, threatening to destroy their once-perfect marriage.