The great return of a mythical duo of humorous comics in an unusual jungle full of disturbing creatures... The famous scientist Pacôme de Champignac runs for peaceful days in his castle. While he is going to his experimental occupations, our friend mycologist receives the intriguing visit of a Zorglub more altier than ever... But what about the behaviour of the Count who confuses his most famous rival with a vulgar plumber? Would Zorglub have carefully planned everything that is happening? A few days later, from the return of a comic strip festival, Spirou and Fantasio savor the idea of leaving for a well-deserved holiday. Spip already imagines himself facing a delicious milk of organic hazelnut. An agonizing wire stroke from the Count makes them start their journey, direction: Champignac-en-Cambrousse. Our heroes go from surprise to surprise. Unable to reach the village! Soldiers belt the surrounding area. Communications are cut off. A stifling jungle of the earth ? past? What happened to the disaster... What happened to the earth? What happened to the disaster?