In a forest on the outskirts of Barcelona, an old shepherd and his flock live side by side with a high-tech laboratory for animal experiments. Two opposite worlds facing each other. Two worlds that are two sides of the same coin. While the shepherd, suffering from a bone disease, watches his profession disappear, the scientists are busier than ever researching the vaccine to fight Covid. “Fauna” is a reflection on the relationship between humans, animals and science in times of pandemic.