Watanabe decides to follow the Iguchi killing plan Kiyota proposes in order to get out of debt. If Iguchi disappears, Imae can marry Kasumi and Kiyota can help his best friend. Watanabe would also be able to use the life insurance money to clear his debt. For the detectives, this plan seems to be the only way to reverse their bad lives. But how can they kill Iguchi and handle his corpse?