Former mercenary Jiang Cheng died in the mission, and his soul traveled to the body of a young man of the same name in "Kowloon Walled City". As soon as he woke up, he was faced with the desperate situation of his sister being threatened by the local snake "Scar Liu". Jiang Cheng activated the [Absolute Control System], using his fighting experience in his previous life and his extraordinary ruthlessness to destroy Scar Liu and his men on the spot, gaining the first "control point" and using it to strengthen this weak body. His evil reputation spread throughout Kowloon Walled City overnight, but he was also targeted by higher-level forces. While protecting his sister, Jiang Cheng used the system to continuously become stronger, using absolute violence to move from the bottom of the village to the top of power step by step, trying to establish his own order in this chaotic land. He will deal with various forces, including the mysterious neighbor Qin Shuying, and finally uncover the greater conspiracy hidden behind the death of the original owner.