The four-inch-tall Clock family secretly share a house with the normal-sized Lender family, "borrowing" such items as thread, safety pins, batteries and scraps of food. However, their peaceful co-existence is disturbed when evil lawyer Ocious P. Potter steals the will granting title to the house, which he plans to demolish in order to build apartments. The Lenders are forced to move, and the Clocks face the risk of being exposed to the normal-sized world.

When a teenaged girl moves to England, with her brothers and parents into the ancient Canterville Hall, she's not at all happy. Especially as there's a ghost and a mysterious re-appearing bloodstain on the hearth. She campaigns to go back home, and her dad, believing the ghost's pranks are Ginny's, is ready to send her back. But then Ginny actually meets the elusive 17th-century Sir Simon de Canterville (not to mention the cute teenaged duke next door), and she sets her hand to the task of freeing Sir Simon from his curse.