The Secret Of Shark Island
While on the way to the beach to go surfing, a freak rainstorm appears from nowhere. The gang picks up Sonny and Cher, whose car has got a flat tire, and escort them to their vacation destination -- which turns out to be a dilapidated hotel. As a thank you, Sonny insists on having the kids stay on as thier guests -- but fate decided that anyway since when they go to leave, it's high tide and the narrow bridge that they drove across is underwater. As he shows them to their rooms, the concierge tells everyone the story of the legendary Shark God. Sonny, Cher and the gang finds themselves stuck at the condemned hotel bumping into the Shark God and unraveling another mystery.