The Lost Warrior is a graphic novel as part of a 3-book miniseries called Graystripe’s Adventure by Erin Hunter, overall part of the Warriors books. Graystripe was part of Thunderclan, one of the four warrior cat clans. However, humans had started to destroy the forest that the clans lived i n, and they had captured some cats. Graystripe found the cats on a truck and freed them, however, the door closed and he himself got trapped while everyone else was freed. He was sold to humans and became their pet. But he wanted to go back to Thunderclan. This book is about how Graystripe finds a friend named Millie, and tries to leave the human neighborhood to begin his search for the clans.
I thought that this book was interesting because, at one point in the main warrior series, Graystripe disappears. Then after many books pass, he comes out of nowhere, happy to meet everyone again. But we never found out what happened and how he was able to find the clans again, as they had found a new place to live in after the humans destroyed their forest. This book explains that, so I enjoyed it.