In a lighthouse by the ocean, Seabold, a dog, and Pandora, a cat, live with their three little mice children, Whistler, Lila, and Tiny. One day, Lila and Whistler decide they want to investigate the mysterious forest that stands near their home. What adventures could be waiting between those trees? Brother and sister ask permission to go exploring and discover not only adventure and enchantment but also a new friend!