Momo lived an ordinary life with her always serious and kind husband. But one day, her drunken husband was brought home by her former superior—the man she had secretly admired for so long. Their conversations came naturally, drawing her heart closer to him, and the distance between them shrank day by day. Her previously quiet life, where she rarely spoke to anyone besides her husband, regained color and vibrancy through this encounter. Torn between her duty as a wife and her growing love for a man she shouldn't desire, Momo finds herself caught in contradiction. Beyond the boundaries of mutual infidelity, the story follows the two as they fall into a pure, undeniable love.