Dylan Morales, an ordinary sparrow, and Brooklyn, a colourful robin, share a strong curiosity and desire to explore the outside world. Their lives are peaceful, but are completely disrupted by the appearance of an airplane. The airplane, like an emissary from a mysterious world, ignites the flame of adventure in their hearts, causing them to resolutely decide to leave their familiar homes and embark on a journey full of unknowns and dangers. However, they did not expect that what awaited them ahead would not only be wonderful sights, but also many difficulties and obstacles as well as a profound test of human nature.