Jonah and Ella Mazer are typical teenagers, but strange and frightening things are happening at their new school. They learn that all of their classmates are descendants of witches -- and the two are destined to die.

Giant lava breathing tarantulas – Lavalantulas – erupt out of ancient volcanos in the Santa Monica Mountains, raining death and destruction upon Los Angeles. With the City of Angels on the verge of incineration, only a washed up ‘90s action hero actor stands in the way of this monstrous swarm of bloodthirsty creatures who burn their victims alive.

The film follows John Crenshaw as he accompanies his girlfriend and her students on a weekend nature-photography expedition deep into the woods. What should be an educational and fun-filled weekend turns into horror as the group is besieged by an unspeakable evil - a horde of hideously disfigured, mutated humans with an insatiable taste for blood. As things go from bad to worse, Crenshaw becomes their only hope if they are going to get out alive.

Chris has it all worked out: he's ready to leave high school behind and head to college in his sweet new ride. The problem is, he'll be leaving behind his best friend and partner in rhyme, Dylan. And he still has to get with Autumn, the girl he's had a crush on since the second grade. The solution? Throw one last party where Chris and Dylan can show off their skills with words and women. But a little get-together becomes a hilariously epic disaster where anything can happen and anyone might turn up... including the original house partiers, Kid 'n Play.