Jack's a 5-year-old animated adventurer who explores real British wildlife. He lives in a city but is transported into a new habitat each episode - he tries to learn to fly with birds, join a deer herd, keep up with a fox, find an otter and swim with seals! Using his magic ability to talk to the animals, Jack immerses himself in their lives. He often gets into scrapes, but Grandpa (played by TV Naturalist Chris Packham) is there to keep him safe and explain the animals more baffling behaviour!