Li Fei, the strongest soldier in the Dragon Kingdom, fought for his country all his life, but was maliciously framed and brutally killed while performing his mission. When his body was sent home, his eyes were gouged, his tongue was cut, and his limbs were severed. His death was horrific. His wife Zhao Qian was pregnant with her son, and she worked hard to raise her son Li An until he was four years old. He eventually passed away due to depression and illness, leaving Li An alone.
Zhang Lei, Li Fei's former life and death brother, once turned against him due to a misunderstanding. He traveled around the world to gangs, amassed huge power, and recruited all kinds of strange people. After learning that his brother died tragically and his sister-in-law and nephew were in dire straits, Zhang Lei put aside his grudges and accepted Zhao Qian's request on her deathbed to adopt young Li An and live in seclusion in the mountains to teach him carefully.
In order for Li An to acquire extraordinary skills, Zhang Lei set a rule: Anyone who asks him to do something must teach Li An all his secret skills, and vowed to help Li An if he is in trouble in the future. Since then, since the age of six, Li An has received Zhang Lei's devilish top fighting and physical training during the day, and studied various side secrets such as stealing, thousands of doors, Feng Shui, hacking, and assassination at night. Over the past fourteen years, he has mastered all skills and become an all-around strong man with peerless skills.
When he was twenty years old, Li An was driven down the mountain by Zhang Lei due to a blood feud. The mysterious case of killing his father cannot be investigated by the official. He is determined to step into the undercurrent of the underworld and find the truth from the underground world. Along the way, he traveled through the underworld, gambling in casinos, fighting for power, tearing apart enemies, getting to know brothers of life and death, encountering betrayal and alienation, and going through the test of life and death. Step by step, he cleared away the fog, dug into the truth of the year, and launched the most ruthless revenge on all the culprits behind the murder of his father.
