Shin-chan's little sister, Himawari Nohara, is kidnapped and he asks for Kamen Rider Fourze's help to go and save her by giving Gentaro a special Shin-chan Switch to transform into anime.
In the heart of the nation's capital, in a courthouse of the U.S. government, one man will stop at nothing to keep his honor, and one will stop at nothing to find the truth.