Popular songwriter Hee-Soo (Kim Sun-Young) is having a dry spell. She wonders if she lost inspiration due to loneliness. Hee-Soo encounters a boy (Byun Joon-Suk) in an apartment building's elevator. He stares at her. Hee-Soo hears a new melody. Hee-Soo teaches the boy love while pretending to teach him piano. With time, the lad grows fond of her, and Hee-song Soo's is nearly finished. Joon-Ho, her teacher of love and music, returns.