Qin Shi Huang, Emperor Wu of the Han Dynasty, Emperor Taizong of the Tang Dynasty, Emperor Taizu of the Song Dynasty, and Emperor Taizu of the Ming Dynasty - the five most famous emperors in Chinese history met in the underworld. They refused to obey anyone, and they quarreled over who was the emperor for eternity and who had suffered the most. The King of Hell was so noisy that he had a headache and waved his hand: "You want to compete so much, why not try something else?" So the five emperors woke up at the same time - and found themselves lying on someone else's dragon bed. The ministers discovered that the emperor seemed... Something was not right?