When he brings in the head of the vicar's expensive Koi carp, Anna's Dad is so cross he locks the new cat out of the cat-flap. Tom argues for the cat to be let back in, but the flap is left shut overnight and now the cat has disappeared altogether.

    And just look at all they’ve found! There are spectacular sticks and teeny tiny non-bitey roly-poly bugs. And this—a red bucket! Why, that would make the perfect boat for Bobo. But while Willie is marveling over the prospects of Bobo as sailor man, the boat—and Bobo!—start to drift away. Far away! Is there anything Willie can do to save his best bud? Perhaps a certain cat can help...