The movie takes place a year after the events of the OVA series. Natsumi, Sei, and Aoi are now 19 years old and are attending a university. The story begins with Natsumi, a cheerful and energetic young woman, who discovers that her favorite arcade game, "Genki Genki!", has been turned into a real-life game by a mysterious organization. The game's main character, a cute and colorful avatar named "Genki-kun," has come to life and is now causing chaos in the city.