In the beginning of the Wild Robot, the robot Roz arrived on an islands'd northern shore. The robot was turned on by curious otters. Once Roz switch turned on she started to explore the island.
One morning Roz was climbing on a mountain and the accident happened. The weather had changed and it started to pour while he was climbing down. Later after the storm passed Roz noticed an egg. Roz cared for the egg and suddenly the egg had hatched. One day Roz goes looking for help on how to take care of goslings. She gets help from all the animals and ends up with a "Nest."
As brightbill grew, he learned new techniques. He learned to fly, swim, and communicate.