Thai is a die-hard fan of the famous singer Gia Nghi (Johnny Tri Nguyen). He is so obsessed with Gia Nghi that he neglects his personal life. When the singer encounters trouble, Thai agrees to travel back in time to help his idol. However, the more Thai tries to help, the more he messes things up!

A talented but obese girl, who ghost-sings for a not-so-talented pop star, undergoes extensive plastic surgery to become a slender beauty with a new identity in this Vietnamese rendition of a hugely popular South Korean film.