Once hatching as a black snake magical beast, the snake survives a thousand years and becomes a dragon. After seven hundred years, the black dragon magical beast finally reaches the requirement to ascend to the Immortal Realm instead of becoming human and restarting in its third evolution.

However, two mortal armies fought and the black dragon is caught in the crossfire. It dies as its spirit tried to ascend into the Immortal Realm. Desperate to live on, the spirit of the black dragon forcibly enters the body of one of the empresses on the battlefield.

Though the empress and her empire is overjoyed at the news, no one knew that it was really the black dragon she gave birth to. Now the black dragon must start his cultivation anew. This time, no one will stand in its way to succeed where it failed.

This is the story of the fourth prince, the story of the black dragon's attempt to become immortal.