Cara was always told never to talk to strangers and to always keep up so she does not get lost. But then she meets an odd-looking creature in the lane, something with fluff and huge eyes, which cries when they meet, so Cara takes his hand and is transported into the magical burrow where he lives. The burrow is a whole world below the ground, inhabited by Mr Frump's many friends, creatures unlike those Cara has met before and they are hungry...