William has just received the best present of his life. It's an old, real-looking stone and wooden model of a castle, with a drawbridge, moat, and a about the castle. And sure enough, when he picks up the tiny silver knight, it comes alive in his hand! finger-high knight to guard the gates. It's the mysterious castle his housekeeper has told him about, and even though William is sad she's leaving, now the castle is his!