This is a first in a new Larry Gets Lost series that features adventures back through time. In Larry the lovable pup's latest adventure, he falls asleep at home next to Pete (who is reading a book about dinosaurs) and travels back in time, waking up in the pre-historic era! Starting with dinosaurs, where he encounters some big (the Tyrannosaurus Rex and Tricerotops), and others small (the Iberomesornis), he tumbles forward to the Ice Ages where he meets a Wooly Mammoth, and on to the cavemen of the Stone Age. But will he ever find his way back to his best friend Pete and the family again?