Home to over 4500 plant species and to more than 7000 animal species, the forest is one of the liveliest places in our hemisphere. For centuries the setting for folk tales and fables, the forest is a treasure trove of wildlife variety, of which the film illustrates some curious examples: a fox giving birth to cubs in her den; ants heating their anthill with their bodies; a bumblebee attacking a wild mouse's next; the beauty of spring-flowering plants.