In the fifth year of Tianye's reign in the Wanxi Dynasty, Emperor Wen died violently and Emperor Wu succeeded him. At the same time as Emperor Wen's death, the family of Prince Chang Ye disappeared overnight... Fifteen years later, the "Four Evil Men" appeared in the martial arts world. It was rumored that these four evil men did all kinds of evil, killing and stealing... However, some people defended them by saying that they were knights and they should kill all those who deserved to be killed. I can't argue... At this time, the country was in turmoil, and Emperor Wu was worshiping the sky. After peeking into the sky, a group of eminent monks came up with a motto, which was to die from a lightning strike in response to the heavenly calamity... There is no airtight wall in the world. In the end, this saying was also spread, "Xiachi is the time of prosperity"... At this time, Emperor Wu summoned the prince to have a secret talk. The last test before becoming the king of a country is to find the family of King Chang Ye...