Derived from the 1947 movie with the same name, a house is haunted by a deceased sea captain who wreaks havoc with the new tenants who were not advised of his existence.

Mr Banks is looking for a nanny for his two mischievous children and comes across Mary Poppins, an angelic nanny. She not only brings a change in their lives but also spreads happiness.

Tia and Tony are two orphaned youngsters with extraordinary powers. Lucas Deranian poses as their uncle in order to get the kids into the clutches of Deranian's megalomaniacal boss, evil millionaire Aristotle Bolt, who wants to exploit them. Jason, a cynical widower, helps Tia and Tony escape to witch mountain, while at the same time Tia and Tony help Jason escape the pain of the loss of his wife.