Max, Virgil, and Norman must prevent the earth from being invaded by brain sucking space aliens. The only way to do this is for Max to make amends with Ernie, his nerdy loudmouth lab partner from school. Ernie is the only one that can crack the computer codes on the aliens' disks

Max's mom brings a figurine back from Haiti that turns out to be filled with zombie parasites.

Norman struggles with his fear of facing Spike an old adversary of his family who murdered his father when he was a boy escaping from an ice prison. Spike vowed a thousand years to finish off Norman as well, and he intends to keep that promise.

Space aliens take over a science station in the arctic and assume the identities of the researchers in order to carry out their devious plan. The aliens can only survive in freezing cold temperatures and they want to make the earth their new home by altering the entire planet's climate by creating another ice age. It is up to Max, Norman, and Virgil to stop them.

Construction unearths and frees an immortal saber tooth tiger that begins to wreck havoc on modern day California. Also freed is an immortal caveman who has spent most of his life battling this unstoppable enemy. He joins forces with Max, Norman, Virgil, and Mom to stop a creature that should have been extinct a long time ago.