A ferocious, prehistoric Megalodon has returned to the surface, terrorizing a group of oil rig workers and members of a local fishing village.

A shark bite spreads a virus across the globe, turning the world upside down. Deep below the ocean, a group of researchers race against time to find a cure. Something has infected the lab technicians and it’s a race against time to reach the surface with an antidote before they are all killed by themselves and the sharks lurking inside the test pool and outside in the ocean.