On this earth, there are many alien visitors who have quietly lurked around humans. They are either kind or evil, but the earthlings have never noticed it. In the remote Yamagata, Tsutsui Yukitaka (voiced by Yoshimasa Hosoya), who is good at baseball, entered the local Kisaragi High School to study. The moment he opened the door of the apartment, he saw a man with long golden hair. Later, it was learned that this man was the first prince of Dogura Star, Baka Ki El Dogura (voiced by Daisuke Namikawa), who lost his memory due to an accidental crash of a UFO. Faced with this prince who often pretends to be innocent but causes constant trouble, Yukitaka is really racking his brains. At the same time, Graft (voiced by Takehito Koyasu), who has a deep grudge against the prince, finds the earth, and they unknowingly enter an elaborate mystery. Of course, Prince Dogula, who has a very high IQ and extremely bad character, his journey on Earth is far from over. The primary color warrior ColorRanger, the alien princess looking for a lover at first sight, the bride forced to marry, and visitors from different planets embellish the ordinary life of the earthlings... This film is adapted from the original work of the same name by cartoonist Yoshihiro Togashi.