Yeon Kyeong, a 33-year-old woman decides to give up on her music after failing multiple auditions. She has been pursuing her dream of becoming a singer from the day she performed in a radio competition but she can’t go on anymore. One day, Yeon Kyeong receives a letter and a guitar from Hyun Soo, her high school friend she used to make music with. Perplexed by his letter, she embarks on a journey to Wolmi Island to say goodbye to her old dream.