Seventeen-year-old Son Da Eun, the youngest of three sisters, has always dreamed of true love, inspired by romance novels and comics. After her family moves to Seoul, she becomes enamored with her handsome neighbor, Kim Seung Hyu. When she discovers he's her new classmate, everything seems perfect. However, as she gets to know him, she learns that he's been a victim of severe bullying, leaving him emotionally scarred. Can their budding romance survive his troubled past?