The flock of geese is flying over a glacial region, looking for food, when they find themselves in the middle of erupting geysers. Gorgo, Nils and Martin are separated from the rest of the group and discover, in the middle of the jets of hot water, a patch of green land covered in fruit and vegetables. As the three friends are helping themselves, they meet the owner of the place, the elf Passiflor. He is not too happy at seeing his garden being pillaged and tells our heroes that he has been a prisoner here, in the geysers, since he fell off the back of a bird several months ago. The elf asks his visitors to help him escape. Nils comes up with a scheme for slipping between the geysers but it does not work exactly as planned¿