d the mysterious bacteria that has been wreaking havoc. But when he stands face to face with it, what will be Toto's ultimate weapon to destroy this silent assassin? Let's find out!An epic battle is taking place right before our very eyes, noses, ears and mouths! And help is on the way from an unlikely but lovable source. What is this source? Meet Toto, your average boy who takes an extraordinary journey to unpack the fascinating world of viruses, parasites, bacteria and fungi! Become a germs expert and triumph!