A parody of the post-apocolyptic anime, "Fist of the North Star", wherin the nuclear holocaust never happens, and so Kenshiro and his brothers have to settle into a regular society and find jobs!

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.