The Edo period, where the world is peaceful. Behind the peaceful lives of people, there was a special forces unit that only a limited number of people knew about them. Its name is "The Evil Fish Squad". The evil fish squad consisting of Rinzo, Surume, Funaemon, and Himechi, are all on death row inmates. In exchange for death penalty exemption, it is a secret force that is tasked with doing dangerous, dark work that is close to death. This time, the mission given to the Evil Fish Corps is to und...