Fifty 'Bugs' have invaded a human body. As they move from organ to organ they are pursued by the body's defenders until all are eliminated. Travel through a dozen double page spreads, each one showing a different part of the body from the skin to the mouth, the throat, the stomach and lungs, liver, heart and finally to the brain. There are questions to answer and lots of things to discover along the way. This is the first hardback copy of this title.