Sometime in the 1900s off the coast of Africa, a father, his wife, and infant son escape a burning ship and arrive in the unexplored jungles of Africa, where they build themselves a treehouse in which to live ("Two Worlds"). Meanwhile, a gorilla couple named Kala (voiced by Glenn Close) and Kerchak (voiced by Lance Henriksen) lose their son to a leopard named Sabor. As they move to another nest area, Kala hears an infant crying and follows it back to the treehouse. She investigates the treehouse and discovers that it is ransacked and the parents of the baby dead. As she looks around the treehouse, she notices a trail of large, bloody cat-like pawprints marked across the floor. Frightened, she rears back and finds a recent photograph of the family together. Kala hears more infantile crying