After three consecutive days of heavy rain, the water level at Sumida River rises and the newly built Eitai Bridge collapses just two years after its completion. Among the 20 victims is Okou, the lover of Yokichi, a member of the theatrical entertainment district controlled by Samon Kamiyama. A body of a bridge carpenter is also found in the debris causing Samon to suspect the construction, which prompts him to launch an investigation. The superintendent, Horitome Tamba rules that the bridge collapse is due to a natural disaster and cleared the wrongdoing of master carpenter Jinbe, who was responsible for building the bridge. Yotaro, who is filled with grief and anger surrenders his jitte and joins forces with his former gambling buddies Juzaburo and Onami to abduct Tamb’s Daughter O-Sono to extract revenge…