Marshall, Will and Holly on a routine expedition experience the greatest earthquake ever known. High on the rapids, it struck their raft and plunged them down a thousand feet below to the Land of the Lost. Take a journey back in time with the Marshall family through this incredible world of breathtaking wonder, pulse-pounding danger. Battle dinosaurs one day and encounter beings from other dimensions the next. The Pylons, the Pakuni, evil energy storms, they are all part of the awesome adventure.