Yoon Saerin (OC) broke up with Jae after 7 years of dating and it hurts her. As she struggles with her heartbreak, she meets Park Chanyeol, who is a musician as well as her senior in college despite having different majors. Like her, he struggles with the regret of being late in telling his love to someone who's been chasing him since high school. They become close and understand each other, can they start a new love?