While waiting for her home renovation to finish, Yumi agrees to temporarily host her friend and her friend's husband. This was supposed to be the first time she'd ever meet him—but everything takes an unexpected turn when the man who arrives is actually her current secret lover! Shocked by this twist, Yumi desperately tries to keep up appearances and pretends to be a complete stranger. However, that night, catching a glimpse of the couple affectionately cuddling in the guest room ignites a fierce jealousy within her. Overwhelmed by uncontrollable desire, she loses all self-restraint and gives in completely…!!