After Noor got the feather at the end of the first book, she gets sent to 1177 in Jerusalem during the Crusades. She makes new friends, one of whom is Zainab, a girl who can make herself invisible. She helps them save some books from being burned before finding the next bird. Sonia Nimr is a good writer and Lynx Qualey does an excellent job at translating this story. I'm really enjoying this series and can't wait to read more of Noor's adventures.