Jooin, a 17-year-old student confused by love, unleashes chaos with some words spoken in a moment of anger. Anonymous notes questioning her actions begin to arrive, altering her quiet life.
Jung-woo is a part-timer at a bookstore. He has a crush on Seo-yeon who works with him. One day while preparing a book gift with her heart, Seo-yeon’s old lover appears in the bookstore.
