TRIS'S BOOK (Tamora Pierce)

Synopsis of "Tris's Book", second book of "Circle of Magic" by Tamora Pierce: With the defenses of Winding Circle Temple seriously weakened by an earthquake, Tris and her fellow mages-in-training try to join their different magic powers to protect the Winding Circle community from a pirate attack.

Earthquake damage leaves Winding Circle vulnerable to pirate attack, so everyone including the young mages in training Tris, Briar, Daja, and Sandry is working to strengthen the community's defenses. When Tris's cousin Aymery comes to visit, he advises the "weather witch" to return to the family that exiled her, but she doesn't wish to leave her friends to face the thread without her.

As the onslaught begins, two things become terribly clear: The pirates have a powerful new weapon, and they have an accomplice within Winding Circle. But the attackers have failed to reckon with the fury of a young mage betrayed once too often and her very stubborn, very loyal friends..