Mr. Thatcher has been working to build the perfect house. And working. And working . . . and so, quite by accident, the house grows and grows in size. But it never seems quite like home. When a crowd of adorable characters from his storybook neighborhood show up looking for a place to stay, Mr. Thatcher cries "It's not perfect yet! You don't want to stay here!" But soon he finds that what makes a house a perfect home has nothing to do with how it looks and everything to do with the friends and family inside.