The Thornberry family is preparing for a birthday party for Donnie, but their plans are disrupted by various crises in Borneo. Grandma Sophie visits, while Nigel and Marianne try to capture a wild orangutan for a film, facing poachers and Marianne's broken wrist. Eliza and Darwin search for Donnie, who runs off into the jungle after a fight with Eliza. They find a lost baby orangutan and reunite with Donnie, who has formed a family with an orangutan and her son. The family eventually reunites after a fire, learning about Donnie's tragic past from a medicine woman in a remote village.
The Wild Thornberrys: The Origin of Donnie
The Thornberry family's birthday celebration in Borneo is disrupted by a series of unexpected events.
