Crayon Shin-chan Movie 20: Arashi wo Yobu! Ora to Uchuu no Princess

A petty argument begins when Himawari eats Shinnosuke's pudding, and in a fit of anger he signs a strange document offered by two mysterious men. He soon learns that the paper gives his little sister away as the princess of a distant world called Planet Himawari.

The entire Nohara family is carried into space, where they are told that Himawari's new role is essential to preventing a disaster that threatens both her new planet and Earth. Faced with the consequences of his impulsive choice, Shinnosuke must decide what his sister truly means to him while the family becomes caught in a crisis spanning the solar system.