The "loosely science-fiction adventure" is set in the summer sometime in the 21st century. Tokyo's Shinjuku ward has become a wasteland, void of all humans due to an unexplained catastrophe. What remains are these strange creatures such as "Donyatsu," the half-cat, half-doughnut hybrid, and "Begaru," a feline bagel composite. (Source: ANN)

The story of the new film is set in Sweetsland, a country next to Jewelland. Ruby and the other Jewelpets are celebrating the birthday of the princess with dancing. However, during the preparations for the birthday party, a mysterious object appears from the skies. In the object is a Sweetspet boy, whose identity is unknown.

Apfelland is a small but beautiful country surrounded by Russia, Austria, and Germany. Vel is a boy who lives in the capital, Charlottenburg. He happens to help a girl Frid. She was kidnapped because radium mine was found in her grandfather's abandoned mine. Aiming at the radium mine, various people gather there, for example, an American who wants to make money, a Polish woman disguised like a man who wants to earn money for the revolution, and the ministry of Apfelland who plots to affiliate with Germany. Vel and Frida are involved in their plots, and they know the secret of the mine.

Short theater manners animations shown before Hibike! Euphonium Movie: Todoketai Melody.