Min Yoo Jung (Park Jung Yeon) is a 25-year-old woman who dreams of becoming a successful pop musician. But her musical dreams are far from coming true—and she spends her evenings playing music on the street. Life takes a strange turn when Park Yeon (Chani), a talented musician from the past, is transported from the Joseon Dynasty (1392–1910) to the present day, where he meets Min Yoo Jung and tells her he’s ready to help her with her musical aspirations. However, he isn’t the only time traveler to visit her: a talented singer named Lee Won (Lee Seung Hyub) also comes from the distant past and crosses paths with her. Things get even more complicated when Jung Do Young (Ji An), a professional in the entertainment industry, uses her powers to connect with the past to uncover Park Yeon’s secrets...