A picturesque family vacation to the Ozarks goes sideways when a group of bull sharks show up just in time for the big fireworks festival that the town holds every year.

A perfect getaway weekend turns into a nightmare for four friends who find themselves fighting for their lives against an experimental shark. In order to survive they must fight sharks, zombies, and shark zombies.

Frustrated by the liberal left and what he deems the destruction of the country he risked his life for, reclusive veteran Quint North (Schneider) is ordered by the court to keep his distance from the local high school with the American flag on the back of his El Camino or face a fine and jail time. In an ultimate exhibition of patriotism, he sets forth a series of events that just may get him killed in his own front yard.

Young Mack encounters an extraordinary supernatural experience with a mysterious ambulance that changes his life forever.