During the Republic of China era, whenever thick fog blanketed the area and ethereal sounds echoed, mysterious treasures were said to appear in the ancient tombs behind Bashu Village in Sichuan. A group of travelers gathered in Bashu Village, each intent on claiming the village’s treasures for themselves. Unbeknownst to them, an unseen presence was silently watching their every move. When these villains finally unearthed the treasure, they met gruesome deaths one after another near the tomb...

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.