Karen Lips lived alone for two years in a cloud forest in Costa Rica to observe a rare species of frog that she had previously discovered. In Miami he plans to write his dissertation on them, but soon realizes that he is still missing some data. But when he returned, the frogs had disappeared. All of them. He soon realizes that there are more cases all over the world.
At the same time, on different continents, many amphibian species had already disappeared. Something is spreading through the forests and rivers that they can’t cope with. What made them disappear? And where does it come from?