Reboot is a book about how Wren died already, but 178 minutes later, she woke up, and became a reboot. The longer it takes you to wake up, the more emotionless you will be. Unexpectedly, she chose Callum, which is known as 22, to mentor. Callum’s still quite human since it only took a short amount of time for him to wake up. Together, they found out all the truths, and started the whole adventure. My favorite part of this book is when Callum and Wren working/talking together. I also love the part when Wren decided to escape instead of letting Callum to get eliminated. Wren continually helped Callum, which was one of the most important fact of why I love her as a character in the book. Overall, I love this book, and I’ll definitely recommend this to people who are into adventurous stories.