When Mr Happy invited Mr Bump to the park, he thought it was a great idea. A picnic, boating on the lake, a bike ride and fun in the playground. What could possibly go wrong?!The Mr Men and Little Miss Every Day series takes Roger Hargreaves' beloved characters on trips and activities that children will recognise from their own lives. All the Every Day Adventures have a `Where's Walter' feature with Walter the worm hiding in every story making for a fun and interactive reading experience for children aged two years and up.