Whew, that's a pig! Princess Prga is facing an unprecedented threat - there are abominations, non-ecological monsters destroying our planet. Help Prze, a fearless fighter against evil, take down the bad guys and show that you care about those around you. And who will you fight against? Get ready for Puchlan Smrdutý, Plastor Nezmar, Bordelnica Polétava or Sušivka Pustina. You don't have to be afraid, you can take a look at the super chupr laboratory at any time, where you will learn a lot about the disgusting things - and especially what applies to them. You can also bring your friends with you, because the more there are, the better. We have a beautiful planet, so let's protect it! The entertaining publication Planeta je prga is based on the record-breakingly popular ČT :D project and playfully introduces young readers to the principles of ecology and caring for their surroundings. And who knows, maybe even adults will learn something interesting from it. Experienced author of works for children Petr Hauzírek and illustrator Daniel Špaček, known not only for his creation of the visual style of Déček, participated in the creation of the book.