The Frankenstones

When Fred wins the big prize on the "Make A Deal or Don't" game show, he and Wilma plan a vacation with Barney and Betty to Count Rockula's spooky castle in Rocksylvania which has now been turned into a tourist resort. Unfortunately, during the trip, Fred and Barney accidentally stumble across Rockula's old laboratory, where his unfinished Frankenstone monster sleeps, and forget to close the window when they leave the lab. Lightning subsequently strikes the machines in the lab, and provide Frankenstone with life. Frankenstone awakens Rockula (who has been asleep for the past five hundred years, thus explaining his disappearance) from his secret crypt, and the two scare everyone out of the hotel, except for the Flintstones and the Rubbles, who had gone to bed early due to jet lag.