Dr. Rick Marshall (Will Ferrell), is a quantum paleontologist who believes in time travel and that it holds the cure for mankind s inhumanity. The world seems against him but he does have one fan, scientist Holly (Anna Friel), who think his work is not only fascinating but she believes Marshall is a genius. This encourages him to finish his time traveling device. When he does, he takes Holly and pyromaniac Will (Danny McBride), with him deep in a cave to test it out.
It works and the three are quickly thrown into the dinosaur era, loosing the time traveling machine. Surrounded by dinosaurs and lizard creatures known as Sleestacks, they befriend a half monkey like beast Chaka (Jorma Taccone), whom them believe can help get their machine back so they can leave this world that is trying to eat them.
Director: Brad Silberling
Writers: Chris Henchy, Dennis McNicholas
Producers: Jimmy Miller, Marty Krofft, Sid Krofft