兵王秦阳未婚妻叶沁遭遇未知巨兽惨死。顾平邀请他参与叶沁生前科研。但顾平却在利用叶沁的研究成果背地里结合未知巨兽的基因，造出“零号”龙形生物。富有智慧的龙形生物，再加上靠吞噬进化的域外巨兽，城市大战，一触即发……

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.