The protagonist Xiao Yi is a direct descendant of the wealthy Xiao family. Due to the power struggle within the family, he was framed and expelled from the family. The parents disappeared mysteriously, and their lives and deaths are unknown. Xiao Yi fell from the clouds to the bottom overnight. He was penniless and was hunted by all forces. He was forced to struggle for a living at the bottom of the city, barely making ends meet by doing odd jobs.
In a dangerous underground black boxing match, Xiao Yi was forced to participate in order to meet the needs of food and clothing with high bonuses. On the field, he relied on his amazing talent and tenacious will to get through all the competition. Although his body was scarred, his unyielding spirit attracted the attention of a mysterious old man. After the game, the mysterious old man found Xiao Yi and taught him the invincible skill "Chaos Universe Art" inherited from ancient times and the top medical skill "Holy Hand Rejuvenation Technique". He also gave him a mysterious ring that can store things and has magical effects.
