The legendary Bela Lugosi as "the Vampire" teams up with Britain's much-loved "Mother Riley" in this hilarious comedy adventure. The Vampire plans to control the world with the help of his robot, which accidentally gets shipped to Mother Riley. Through radar control, he contacts the robot and orders it to come to him, bringing along Mother Riley! But his life is turned upside down when he holds this most meddling of mothers captive.

It is the end of the 18th century and smuggling is considered to be a legitimate spare-time occupation for most fishermen around the British shores. But when a gang of cut-throats, led by the infamous Black John (Bernard Lee) begins to lure ships onto the rocks of Smugglers Bay, and murdering their crews for the sake of loot, the fishermen begin to fear for their livelihoods. In desperation, they appeal to the local magistrate Squire Trevenyan (Peter Cushing).