On a cold, cold day too wet to play, Sally (and her brother too) had nothing to do, but sit sit sit. And they did not like it. But then with a BUMP, that made them both jump, appeared The Cat in a Hat! And just like that, Sally and her brother had games to play and a lot of good tricks to pass the day. Their mother won't mind at all, and the mess will be small... Or should they listen to the wish of their responsible pet fish and send this mischievous cat away?