Japan's near future: nuclear war, disasters, and corruption spark revolution and collapse. The nation splits into three warring states. Former official Aoteru Misumi rises through ranks using knowledge and eloquence, seeking reunification.

A team of assassins exacts a bloody retribution on Joe Logan – a former ninja who escaped his clan – and his family for betraying their ancient code. Rising from his seeming "death," Joe will re-emerge as his former self – Ninja Kamui – to avenge his family and friends and bring down the very clan that made him.

It is the 12th film based on the popular comedy manga and anime series Crayon Shin-chan. The film was released to theatres on April 17, 2004 in Japan.