When Pongo, a young orangutan, reaches for a ripe mango, she gets a big surprise! Clinging to the fruit, and very confused, is a little bat called Bulu who can't find his way back to his cave in the busy daytime forest. Pongo soon learns that for a creature who is used to the shadows of the night, the day can be a very scary place. When they finally find Bulu's home, the roles are reversed, and Pongo must venture into a dark and unfamiliar world. Can the two animals find somewhere between night and day, where their friendship can blossom?