In the high-stakes thriller Animal World, directed by Han Yan, a desperate young man named Zheng Kaisi, played by Li Yifeng, finds his life turned into a deadly game. To pay off his mother's crushing medical debt and protect his childhood friend Liu Qing, portrayed by Zhou Dongyu, he boards a mysterious cruise ship run by the enigmatic and chillingly charismatic Anderson, brought to life by Michael Douglas. On this vessel, the rules of civilization are stripped away, revealing a brutal arena where contestants gamble not with money, but with their lives in a series of perilous games. As Kaisi is forced to navigate this treacherous world where trust is a liability and every opponent is a predator, he must rely on his wits and a unique mathematical skill to survive. This intense action-drama plunges viewers into a visually striking and morally complex universe, exploring the primal instincts that surface when ordinary people are pushed to their absolute limits.