Exhausted from work, OL Emi encounters a runaway girl named Ririka wandering alone on her way home. Concerned for her safety, Emi, who has a kind heart, takes her in. However, Ririka accidentally discovers Emi's secret: she's a lesbian. "As a thank you for letting me stay, can I do anything you like with my body?" Ririka tempts Emi, and despite knowing it's wrong, Emi gradually loses her composure and becomes consumed by Ririka's beautiful body...