The young man Su Xinran was born in a wealthy family. He was naughty and willful since childhood. He studied art for many years and had no skills but was the best at pranks. He often made trouble for the neighbors, so he was labeled as a nightmare and had to escape from his hometown because of adultery with his sister. He started a new life as a postman. On the way, he first met Long'er, a mysterious girl who claimed to be amnesia. He walked together. Then he was teased by someone and sent the manifesto to attack the bandits to the bandits' nest. He was forced to read it in front of the bandits who were eyeing him...