When Pete, Krish and Nancy read a story in the local paper about weird gunk being found in a field where sheep have gone missing next to Hilltop House, they're sure there's a mystery to be investigated. The new research farm at Hilltop is working on the creation of new bio-fuels, but when a storm knocks out the power in the local area and something escapes from the farm, it's clear that the research has gone horribly wrong ... Can the brave trio save the village in their most terrifying adventure yet?