karana live on the Island of Blue Dolphins, where there are plenty of food and wild life. Karana is looking out across the ocean at the Aleut ship which is heading to their island. The Aleuts has come to hunt sea otters.
The Aleut and the head chief made a deal that the tribe will get equal parts of what the Aleuts hunt. But the Aleut captain didn't keep the deal and that caused war between the tribe and the Aleuts.
After the war , most of of the men were killed including the head chief. The tribe thought that the Aleut ship will come back so they wanted to leave the island. When the boat came to pick them up to a different island, katana and her brother got left behind.
Karana was left to survive all on her own with her brother , who soon got Killed by the wild dogs. Karana made weapon to kill the wild dogs. Fist she planned on killing the alpha. Then she took pity on him and raised him as a pet. She also tamed other animals.
Later on , the Aleuts came back to the island and Karana hides in a cave. Then, she might a friend who taught each other their languages, but she soon had to leave. Karana's dog soon died and she tamed another dog, that is that dog's son.