Imagine Sam's shock when he discovers that a tiny man, Charlie Chumpkins, has been living under his bed for some time and imagine, too, the pressure of keeping his little friend a secret. Sam manages to come to the rescue each time Charlie gets himself mixed up in a mishap...and there are plenty of them, from being catapulted into a tree, to being dyed blue to falling into a supermarket freezer.
But what will happen when a campsite bully discovers Charlie on holiday and sends him up in a model aeroplane? Can miniature Charlie ever survive the immense power of the sea?
And what surprise does the magician have in store at Sam's birthday party?