What can one not become? A cook or a waiter? A marine researcher or a pilot? Thomas Müller introduces children to the world of professions. Children often think about what they might want to do in the future: repairing cars, flying to the moon, caring for tiger cubs, chasing criminals. And there are still so many possibilities! Thomas Müller showcases some of them, giving a taste of the joys and challenges in the lives of dentists, booksellers, janitors, bean counters, and many others, thus giving the term "profession" a unique meaning. In the end, Mr. Schmidt (the cook) and Mr. Leopold (the waiter) prove to everyone that they know their craft: Bon appétit to all!.