Diva Pei Pei time-travels into the body of the six-year-old "little mute" Pei Pei due to a stage accident. Pei Pei's adoptive father, Song Yang, was once a moderately famous singer who was reduced to busking on the streets after being betrayed by his ex-girlfriend. However, Pei Pei's arrival allows the mute Pei Pei to speak again with a voice like heaven's melody, leading her to help the down-and-out Song Yang overcome obstacles, showcase her voice on a talent show, and amaze the entire audience.