Jo In-sung
The movie starts in the present day. The daughter, Ji-hye (Son Ye-jin), is cleaning-up around her house when she comes across a box full of old letters and a diary that detail the story of her mother, Joo-hee (who is also played by Son Ye-jin). Periodically in the movie, Ji-hye reads one of these letters, which starts a flashback scene in which the story of the mother is told. These flashbacks are intertwined with Ji-hye's own story, in which she falls for a fellow student, Sang-min (Jo In-sung), who is involved with the school theater.