Tom, Huck, and Becky are in Egypt where they encounter a mummy, as well as thieves who are using him to steal valuable pyramid treasures. When they're captured by the latter, will they be able to escape their own entombment?

Tom, Huck, and Becky find themselves near an old medieval castle where it's been taken over by an evil wizard. After he captures and imprisons Becky, the boys have to rely on their wits and some luck to make their way into and through the castle in order to rescue her and a princess. Will they succeed or will the evil wizard cast his magic upon them all and come out the victor?