After an accidental kiss, wealthy third-generation chaebol Hwigyeom becomes intrigued by Yeong-a, a spirited young woman connected to fragments of his lost memories. What begins as a playful teacher-and-student arrangement to help her navigate love gradually develops into a deeper and more intense relationship. As their lessons grow increasingly personal, Yeong-a finds herself drawn to Hwigyeom, while unknowingly helping him confront the traumas he has carried for years.