Band lead vocal Jacky gave up on music and his band at the age of 30, leaving behinds his bandmates and brothers for 10 years. Yet he had borne this regret till his late years. While death door is closing in, he is given one last opportunity through a magical arcade, transferring him back to the body of his youth, and reuniting with the band. In one last trial, he must play his music again, in order to reconcile this regret that has haunted him his whole life.