Takopi travels from his home of Happy Planet to spread happiness on Earth, but meets the unsmiling Shizuka. Her school friends and home life are causing her somber expression and pure hearted Takopi is determined to change things.

Long ago, a war broke out in Japan that pitted Kantou against Kansai and divided the country. Kansai became dependent on Kantou, but slowly the police and government began losing control of Kansai to criminals known as Akudama.

Shin Chan gets his mother to finally buy him the last Ultra Hero sword, but when he opens the package there is only one rule inside. In addition to this confusion, Shin Chan meets Tostado, a dog just like Nevado but in black.