Watch out for muddy puddles! Because you never really know ... what there might be lurking down in the depths below. Have you ever thought about what could be in the world below the surface of puddles? Join in as one boy finds that some are very, very deep; some are teeming with particularly peckish crocodiles - eek! - and some icy puddles hurt your bottom when you slip - ouch! Others are full of frogs, underwater kings, lost socks and - WATCH OUT! - the BIG, BAD duck ... A joyous celebration of the imagination and splashing in puddles by the star of CBeebies' Mr Bloom and the bestselling illustrator of Aliens Love Underpants.