The Outlaws plan a day of non-stop adventure. The only problem is that William is meant to be babysitting. But William won't let that stop him having fun with his gang - he'll just bring the baby along! There is only one William. This tousle-headed, snub-nosed, hearty, loveable imp of mischief has been harassing his unfortunate family and delighting his hundreds of thousands of admirers since 1922.