Staying at home, Ah-young accepts a position as a cafe manager at the suggestion of an acquaintance and starts living independently for the first time. Wanting to build a good relationship with her neighbors in this new environment, she brings cookies to the house next door. The attractive man who answers the door is revealed to be Woo-jin, a student she tutored a decade ago. This encounter leads to them spending more time together, and on this occasion, they are about to have dinner at Ah-young's home. While preparing the meal, Woo-jin accidentally knocks over a box, which reveals its contents: a dildo, a present from a friend to commemorate Ah-young's new living situation. Embarrassed, Ah-young hurriedly attempts to conceal the dildo, but Woo-jin calmly offers to "assist as a former student." Will this somewhat secret tutoring session, with their roles now reversed after ten years, turn out to be acceptable?