On the third anniversary of his father's passing, a woman suddenly appears at the home of a young man who has been living alone. She claims to be a former student of his late father, a university lecturer, and says she has come to pay her respects. As they talk, the stories she shares about his father reveal a side of him the son never knew. Moved by these memories, the woman feels a deep desire to repay the kindness the father once showed her—but her gratitude soon takes a passionate and unexpected turn.