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Hoping to escape Lidsville and return to his own world, Mark (Butch Patrick) is receptive to the plan hatched by talking-hat Colonel Poom. Finding a map that will lead Mark to a "golden ladder," Poom uses this valuable document as the cornerstone of his plan. Unfortunately, Mark's exit is blocked by evil magician Horatio W. Hoo Doo (Charles Nelson Reilly), who then conjures up a huge, horrific inflatable giant called "Big Daddy" to discourage the terrified citizens of Lidsville from ever helping Mark again. But the fact that "Big Daddy" is a spitting image for Hoo Doo is a dead giveaway that the conniving conjurer's scheme is doomed to fail (after all, how could anything so ugly ever truly be a winner?).