'This is the story of one of the most far-reaching and influentially naughty things we ever did in our lives. We did not mean to do such a deed. And yet we did do it.' After being banished to the countryside for creating even more mayhem than usual, the Bastable children vow to mend their ways. Establishing 'The Society of the Wouldbegoods', their first rule is: 'every member is to be as good as possible'. But sometimes it's just not possible to be good - no matter how hard you try.