Tremors: A Cold Day in Hell

Burt Gummer and his son Travis Welker travel to the Canadian Arctic after reports of deadly attacks by giant underground worms. Their investigation soon turns into a fight against graboids, while Burt suspects that a military project may be trying to adapt the creatures for its own purposes. When one of the monsters poisons him, the pair must obtain fresh venom to make an antidote—and that means getting close enough to milk a graboid.