Due to profit-driven commercial scientific research by humans, it led to the emergence of retaliatory actions from a giant squid in the depths of the Antarctic against the Antarctic international scientific research station. Han Lian, a member of the Antarctic transportation team, gets involved in this disaster. In order to rescue Rosa and his teammate Qiangzi, he engages in a life-and-death struggle with the giant squid and ultimately manages to escape.

The surrounding areas of the Devil's Sea is also known as the Bermuda Triangle of Asia. Due to electromagnetic interference, aviation accidents are common in the region. Lin Hao and his daughter Yi are passengers of Flight GZ261. As it flies over the Devil's Sea, the plane malfunctions, causing an emergency landing on a crocodile island. Hao and other driving passengers encounter enormous sized crocodiles and spiders and engages in a battle for survival. When Yi is captured by the giant beasts, Hao fights for his life to rescue her daughter.