Watch on HDtoday. Hyun-soo, a 39-year-old former opera singer surviving on a convenience store part-time job, meets Sol-ji, an 11-year-old girl who dreams of becoming an idol despite her lack of singing skills. Through the rhythms of hip-hop, opera, and idol pop, the two heal each other’s wounds and move toward their dreams in this cross-generational musical coming-of-age drama.