A spectacular journey of discovery into the world of letters that will surprise and make you laugh – for both young and experienced letter enthusiasts and for those who want to become one. Do you know the bacteria that are BFFs? A feeder that can hold five meatballs at the same time? Rapunzel fooling Rambo with her braid, or a double-sided bomb next to a real headache? In this book of letters, there is so much discovery – even twins, one grumpy Z and the other sensitive Z!