Sen'ichi and his friends are knocked unconscious by a huge earthquake, and when they wake up, they have wandered into the royal palace where King Enma is located. The evil deeds of Saha reflected in the mirror of Jōharuri. Sen'ichi and his friends thought they were going to hell, but they managed to escape by creating a special medicine to cure King Enma's chronic illness. However, the five are banished to hell by evil people who are jealous of them. In order to save Sen'ichi and his friends from the crisis, King Enma begins touring hell together, aiming for the exit to Saha.