To avenge the brutal murder of his brother, Jake Ray journeys to the Philippines, where his search for truth finds him battling both in and out of the ring. But the weapons are always the same: bare fists, bare feet. And the rules never change: last man standing wins.

A mad scientist's DNA experiment on the bones of a mysterious jungle creature brings the carnivorous beast to life, and only his former assistant Ash Mattley and CIA operative Claire Sommers can stop it.