"After discovering the truth about how he lost his memories and Dr. Horizon's true identity, Hilo goes back to Earth and tries to prevent Razorwark from destroying the world--and everyone in it"

The epic adventure follows the journey of a robot, Rozzum unit 7134, 'Roz' for short, that is shipwrecked on an uninhabited island and must learn to adapt to the harsh surroundings, gradually building relationships with the animals on the island and becoming the adoptive parent of an orphaned gosling.