Former warden Tang is imprisoned for accepting bribes, while Jun who failed to escape from prison returns to prison to continue serving his sentence. Jun sees that Tang is familiar with the prison and lures him into cooperating in the breakout plan. The two hit it off, and even tried to create trouble and blame it on Big Roller. Jun soon discovers that Tang has other tricks, forcing him to team up again with Big Roller, Mak and new warden Ma to crack Tang`s conspiracy.