Yumi marries into a crumbling, run-down inn to save it from collapse. Dreaming of a warm and happy family, she arrives full of hope, only to find her husband absent and instead greeted by his stepson, Shuji. With a neglectful father, Shuji has been desperately struggling to keep the inn afloat, and he harbors deep resentment toward Yumi. He sees her as nothing more than "a sly fox sent by that good-for-nothing father" and watches her with cold, hostile eyes. Determined to win his approval, Yumi resolves to obey his every command. Whether he recognizes her sincerity or not, Shuji begins to use her as a tool for avenging his father, manipulating and dominating her to satisfy his own desires...