As a child, Alan Cade steals a wooden voodoo box containing a magical pen that has the power to make whatever is drawn with it become a reality; years later, when a monster truck accidentally runs down his wife Becky, Alan uses the pen to summon a monster to seek revenge on the occupants of the vehicle, five friends partying at a nearby cabin.
Lockjaw: Rise of the Kulev Serpent (AKA Carnivorous) is a derivative straight-to-DVD piece of garbage that rips off its basic revenge plot from enjoyable straight-to-video 80s horror Pumpkinhead. But where Pumpkinhead proved to be a fun creature-feature thanks to solid direction from FX legend Stan Winston, a very cool monster (also by Winston), and a decent performance from seasoned pro Lance Henrickson, Carnivorous simply elicits boredom and unintentional laughter in equal measures with its uninspired script, inexperienced cast, and truly crappy beast—an over-sized, poorly rendered CGI snake with an alligator's head.
Opening with an embarrassingly naff credits sequence, complete with cheesy lightning effects and statues with glowing red eyes, Carnivorous does not bode well from the outset, and matters only get worse from thereon in: director Amir Valinia sets up the film's back-story in an awful prologue that displays a complete lack of talent from its child actors (while also showcasing a neat array of dollar store Halloween props), before cutting to the present day, where he introduces viewers to his equally untalented adult cast, a bunch of total unknowns who are likely to remain that way if this is the kind of bilge they choose to appear in.
After some predictably dumb drunken shenanigans at the cabin, during which sexist jerk Kurt (Caleb Michaelson) gets a lap-dance from drunken big-breasted slapper Ashley (Victoria Vodar), Kurt's nice-girl girlfriend Sam (Lauren Fain) seeks comfort in the arms of good-guy Kelly (Wes Brown), and Ashley has sex with her boyfriend (but annoyingly keeps her bra on the whole time), the creature finally moves in for the kill. Several unimpressive death scenes later, ex-rapper DMX turns up with a rocket launcher and blows the 'snakigator' to kingdom come, finally putting an end to our suffering.