It was directed by Koji Masunari from a script by Hideyuki Kurata, and stars the voices of Tomoyo Kurosawa, Honoka Ikezuki, Shōtarō Uzawa, Tamaki Matsumoto, Takuto Yoshinaga, and Keiji Fujiwara.

In the process of looking for their missing class pet (a rabbit named Pyon-Kichi), the children rescue a dog they find injured in a corn field.

The aliens work for the host (called Neppo) of the universe's most popular entertainment, "The Space Show", which appears to be a variety act broadcast from a mysterious moving spaceship.

However, the ship requires a particular power source to run; namely a substance called Zughan, which turns out to be a close relative of the wasabi root and also appears to function as a form of recreational drug.

This leads to a show down at an interstellar festival, where with the help of friends they've made along the way, the children manage not only to defeat Neppo and rescue Amane but also save the entire universe.

The film reunites the production staff of R.O.D the TV (2003–2004), including director Koji Masunari, writer Hideyuki Kurata, and character designer Masashi Ishihama.

[11] Manga Entertainment acquired home video rights in the UK and released the film in a Blu-ray/DVD combo pack on July 2, 2012.

[13] The film was criticized for its lack of originality, primarily because A-1 Pictures appears to draw too much material from the works of Hayao Miyazaki.