He tells his next-door friend Joshua about the Shy Town, and they set off, with Senan's grandmother in a ramshackle wheelchair, to find this elusive place. Along the way they make friends with Paperboy. Who is, as you'd expect, a boy made of paper.
With the help of a kruckle (a sort of Shy Town creature) that they meet on their journey, they find the Shy Town, only its real name is Perfection, because it is absolutely perfect.
But all is not well in Perfection: the inhabitants are constantly worrying about making it more and more perfect.
But since more perfect than perfect is an impossibility, they are constantly exhausted.
What can Senan and friends do to save the kruckles from their obsession with perfection?