He transmigrated and changed bodies, becoming Meng Chang, an obscure emperor of Later Shu during the Five Dynasties and Ten Kingdoms period. He wants to change things, not only to alter his own fate but also to bring this chaotic era to an end. No bloody slaughter, yet he claims the realm; no seductive splendor, yet beauties embrace him. See how Meng Chang changes himself and the world. This is not history; only many of the names and events are the same as, or similar to, those in history. Don't criticize it for its differences from the historical record. This is just a dream: a modern person goes back to the Five Dynasties and Ten Kingdoms period and changes the world and history. It's a story that could only happen in a dream, so don't take it seriously.
Overall, it's still worth watching.
Very good-looking and worth recommending