This big-screen adaptation of Land of the Lost stars Will Ferrell as Dr. Rick Marshall, a quantum paleontologist who has been discredited in the scientific world due to his strident belief in time travel as the cure for all of humanity's problems. After hitting an all-time low, giving a lecture to elementary school kids, Dr. Marshall meets an ambitious young scientist named Holly (Anna Friel), who tells him she has followed all his work and believes he's a genius. Spurred on by her enthusiasm, he finishes building the device that will allow him to time travel -- something he promptly does along with Holly, and white-trash fireworks salesman Will (Danny McBride), after Will leads them into a cave that seems like a promising place to test the new machine. They end up in a world full of dinosaurs, sand, and scary lizard-like creatures known as Sleestacks. They quickly lose the machine that brought them to this alternate universe, and if they ever want to return home, the trio must recover it with the help of Chaka (Jorma Taccone), the monkey-like friend they make in this strange place.