The male protagonist Lei Jitian, whose biological father is unknown, lives with his mother. Her mother is cheerful and optimistic. She has been telling Lei Jitian rumors and stories about heroes in the martial arts since childhood. She is good at craftsmanship, so Lei Jitian admires heroes very much and is also very good at making crafts.
But this simple and happy life changed one rainy night when Lei Jitian was seven years old. The mother and son were chased by a group of people and fled all the way to the cliff. The mother left Lei Jitian a wooden box and a token, and told Lei Jitian to hide them. The mother put a piece of candy into Lei Jitian's mouth and told Lei Jitian that if the mouth is sweet, the heart will not be bitter. He should laugh and be happy, so as to drive away bad luck.
The mother wrapped a handful of weeds in Lei Jitian's clothes, jumped into the cliff with the dummy in her arms, and the killers retreated. Lei Jitian covered his mouth with tears in his eyes and waited until dawn. After opening the wooden box, there was a book and a letter in the wooden box. In the letter, his mother told Lei Jitian about Lei Jitian's life experience. Lei Jitian determined to become a powerful hero in all directions and avenge his parents' grievances.
Time flies, Lei Jitian is already sixteen years old. When traveling to a city, he meets Lin Jiuyuan, a handsome young man.
The two continued to travel and met a seriously injured man in the deserted mountains. The rescued man woke up a few days later, but his memory was missing. However, this man was highly skilled in martial arts. In this way, the three teenagers temporarily traveled the same road and experienced many things.
