The occurrence of pandemics caused by zoonoses, i.e. viruses that jump from animals to humans, has been on the rise for decades - the latest example being Covid-19. So what could be more important than bringing the destruction of intact ecosystems by humans back into focus in films and series for younger audiences? Especially when the grievances are conveyed through a child-friendly yet gripping story. The animated series "When the Animals Left the Forest" is just such a project, which in a total of three seasons gives young viewers an understanding of how humans literally behave like an axe in the forest. We follow a group of humanized animals who, despite all their differences, have to show solidarity when the clearing crews move into their beloved Thalerwald forest with their heavy machinery. The toad has seen the world and suggests the white-tailed deer park, a nature reserve, as a safe haven. With the fox as their leader, the owl, crow, otter, toad, weasel and all the other animals set off. But the journey there is long, arduous and full of dangers, many of which are once again caused by humans. In the hope of a better tomorrow, the goal remains to teach young generations how to treat our planet sustainably, while adult politics must finally change course. And thought-provoking series such as "When the animals left the forest" serve this purpose - quite apart from their sometimes exciting, sometimes touching stories. The Thalerwald has been home to a community of wildlife for generations. But drought has now dried up their water resources, and human construction projects are drawing ever closer. As the world collapses around them, the animals call an emergency meeting. In desperation, they plan a long and dangerous journey to White Deer Park, a nature reserve known only to Toad. Fox is appointed leader and Badger calls into being the Oath of Mutual Protection to guarantee safety for the smaller animals who are reluctant to travel with their predatory natural enemies.