On his latest expedition, Dr. Rick Marshall is sucked into a space-time vortex alongside his research assistant and a redneck survivalist. In this alternate universe, the trio make friends with a primate named Chaka, their only ally in a world full of dinosaurs and other fantastic creatures. A space-time vortex sucks scientist Rick Marshall, his assistant Holly and a survivalist Will into a world populated by dinosaurs and painfully slow creatures called Sleestaks.