In his previous life, He Qianjue was the most feared "venomous snake" in the underground world. He was cold-blooded, ruthless, and calculating. However, he was not defeated by his enemies, but died from an extremely absurd "human experiment" - the underworld giant hiding in the darkness used the entire city as a petri dish, weaving an invisible giant web with money, power, lust, greed and fear, and used He Qianjue, his brothers, women, opponents, and even tens of thousands of ordinary people as observation samples. They were forced out of the most despicable or glorious aspects of human nature by a designed desperate situation, and were reduced to cold symbols on experimental data books.