Taro Sakamoto was once a legendary hit man considered the greatest of all time. Bad guys feared him! Assassins revered him! But then one day he quit, got married, and had a baby. He’s now living the quiet life as the owner of a neighborhood store, but how long can Sakamoto enjoy his days of retirement before his past catches up to him?!

Shin and Heisuke infiltrate the JAA jail to find an imprisoned fortune teller who can help Shin boost his ESP. However, their cover is blown by the other prisoners and the warden! Hoping to find the fortune teller, who is said to be in the lowest level underground, their tour of the hellish prison filled with violent, hardened criminals is just beginning!