In the vast ocean, a giant shark mutated by chemical pollution wreaks havoc. Ruthless businessman Du Heng, seeking to seize a fishing ground, traps its owner, Lin Haiyang, in debt and has him imprisoned. Lin Haiyang’s son, Lin Kai, attempts a rescue but is captured alongside Pei Lu, a worker’s daughter investigating the pollution. As the shark grows more aggressive, Du Heng uses them as bait for a deadly hunt. Aboard a fishing vessel, a brutal battle unfolds where human greed and nature’s fury collide.