The film opens with a girl group called "Pink Dolls" about to perform in a televised competition. They lose to the more mainstream girl group, Pure (played by After School (band)) . They move into a new studio where they hope to record their next hit, and finally make it to the top. There is tension and rivalry between the four members of "Pink Dolls" - Je-ni, a singer insecure with hitting high notes, A-rang, a singer addicted to cosmetic surgery, Shin-ji, who can't sing, but is an excellent dancer, and Eun-ju, the eldest and former backup dancer who despite being the oldest, is bullied by the younger three.