In a City where crime rules supreme, District Attorney Tony Quinn has the scales of justice stacked against him. When a crime boss has Tony blinded by acid, it seems that crime has won for good. But through a miracle of modern science, Tony is given the ability to see in the dark like a bat. Tony Quinn takes the guise of the Black Bat to see to it that crime pays and that the scales of justice are balanced once more.

Four friends set out by boat for an idyllic vacation on a private, remote island. But unknown to them, a weaponized shark has escaped from a top secret military lab nearby, a shark that was genetically engineered with hate in its blood, and programmed to hunt any human within range. Now, these friends must band together to battle an all new brand of predator who will stop at nothing to remain at the top of the food chain.