Naia lives alone with her parents in a towering megalopolis. Left largely to herself she roams the concrete streets to find a place to plant her seeds and grow a garden. One day, in a narrow alley, Naia stumbles through the hidden entrance to Yap Yap, a forestland inhabited by strange and magical creatures of nature. Naia makes new and unusual friends, but a growing darkness is threatening Yap Yap’s existence. Naia sets out on an impossible quest to stop the darkness and save both worlds.