Dr. Emma Collins and her team are spending their third summer on the island of Little Happy studying the effect of climate change on the great white sharks who come to the nearby nursery every year to give birth. Along with the last two inhabitants of this former fishing village, their peaceful life is disrupted when a "scientific" team led by her ex-boyfriend and marine biologist Richard show up looking for three bull sharks who we soon learn aren't just any bull sharks.
Seagal stars as mob kingpin Mr. Alexander, an old-school boss who rules his criminal empire with both nobility and brutality. For a simple prison hit, he sends his best enforcer and protégé Roman Hurst (Foster). When the hit goes wrong, Hurst is forced to pay the price of his failure: banishment in the city that he almost once ruled. But a war is brewing for the soul of the city between Alexander, a cold-blooded gangster known as 'The Iceman" (Rhames) and a merciless Mexican cartel...