The mouse who was the bait in the trap hurries to an outpost, from which a telegram is sent to the Rescue Aid Society headquarters in the United Nations, New York City. Bernard and Miss Bianca, the RAS' elite field agents, are assigned to the mission, interrupting Bernard's attempts to propose marriage to Bianca. They go to find Orville the albatross, who aided them before, and meet his brother Wilbur, who flies them to Australia. There, they meet Jake, a hopping mouse who is the RAS' local regional operative. Jake becomes infatuated with Bianca and flirts with her, much to Bernard's dismay. He serves as their "tour guide" and protector in search of the boy. Wilbur accidentally bends his spinal column out of shape trying to help them, so Jake sends him to the hospital (an old ambulance). Wilbur refuses to undergo surgery, and his back is straightened as he fights to escape the medical mice. He flies off in search of his friends.