 Coutn Duckula, Nanny, and Igor all head out to the movie theater one night, seeing the film "The Lost Valley", which leaves Igor bothered (he wished to see a film on Bela Lugosi, and hates fiction) and Duckula starstruck, which means that he is then fantasizing about heading to the Lost Valley to find the treasures there. Count Duckula (by some paradoxical ploy) transports the castle to the fictitious world of the Lost Valley, where he meets the natives and attempts to find the treasures there. They are found, but Duckula is dissatisfied when he finds out that they are cheap props, and to make matters worse, the castle soon transports off without its inhabitants, leaving them stuck in the film, which soon ends, and leaves them in the screen