Kyung-min, an English tutor, has been dating Seon-hee for three years. Kyung-min likes Seon-hee, but feels frustrated by her pressure to get married. Seon-hee would occasionally ask Kyung-min to attend one of her friend’s weddings together, but he refuses each time feeling burdened. One day, Seon-hee pleads Kyung-min to come to a wedding, as she was to receive the bouquet from the bride, but Kyung-min refuses again, leading to a serious dispute. Kyung-min meets Young-won, a piano teacher, through one of his students. Young-won tells Kyung-min that she wants to learn English to watch films without subtitles. Kyung-min tells Young-won that he is interested in piano, after one of their tutoring sessions. Young-won suggests that he takes piano lessons from her. The two decide to exchange tutoring sessions from that day on. Gradually, they develop feelings for each other which later turns into a romantic relationship.