The Norimaki Family, the Soramame Family, Suppaman, and Dr. Mashirito end up coming to a summer resort which is really a haunted castle filled with monsters. While enjoying the many facilities, such as the arcades and hot spring baths, they all end up falling into the clutches of Vandora, a female vampire who intends to feed off them.

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Parent story: Dr. Slump: Arale-chan