In the 19th century Meiji era wearing Katan was banned by the government and those who used to knowa samurai, gradually disappeared. There were many people who did not like the changes taking place in Japan, and the crime rate is inevitably increased. The only way out of Japan was a prison in the heart of the lake from which it was impossible to escape. While in prison can be accessed only through the water.3 guys from Kumo family were asked to carry the criminals in their new "home". But... if it was only what they were doing...?