Five years after first punching a megalodon in the gob, Jonas Taylor (Jason Statham) has become a tireless warrior for enviromental concerns. When during one trip to the depths he uncovers an illegal mining operation, this puts him at risk from two sides: An old enemy and a whole pack of megalodons who are only kept from the surface by a fragile thermal barrier.

Flashy creature feature action that unfortunately is far too wellbehaved and bloodless to be as outrageously funny as Ben Wheatley's earlier SIGHTSEERS.