Rainbow-colored meteorites called CHARM fall to Earth and awaken a rare power in a small share of people: Charm Vision, which lets them see, give form to and control their own charm and worth. The Uchoten Corporation takes an interest and assembles five buddy units, each pairing an ability user with a partner, for ten members in all. Living together in a shared facility called Garage, the girls begin a training program lasting a full year, meant to launch the idol project CHARMS!!. With help from their supporters, they face a series of challenges and grow closer as a group. This single-episode ONA is a promotional video for the idol project.