Overview
The Prophecy is the 34th book in the Animorphs series, authored by K.A. Applegate. It is known to have been ghostwritten by Melinda Metz. It is narrated primarily by Cassie and secondarily by Aldrea. It was published on September 27, 1999.
Plot summary
Cassie comes home in owl morph to find a Hork-Bajir leaving the barn. Cassie realizes that if the Hork-Bajir is a Controller, the Yeerks might suspect that she is one of the "Andalite bandits". She attacks it, and nearly blinds him with her talons when she realizes it is in fact Jara Hamee. When she asks why he is there, he tells her that an Arn has come to the Hork-Bajir valley, and Toby wishes for their advice on what to do. Cassie tells the other Animorphs about the Arn the next day and they all agree to go.
The Arn's name is Quafijinivon, the last of the Arn. He tells them that he wishes to create a force of Hork-Bajir to fight the Yeerks on their home world, by taking a sample of each Hork-Bajir's DNA. The Hork-Bajirs accept, but Quafijinivon also wishes to find a stash of weapons hidden by Aldrea - Seerow's Daughter. They ask him how will he do this if she is dead, and he tells them about the ixcila of Aldrea he preserved, an electronic copy of her personality, thoughts, and brainwaves. The Arn says Aldrea must choose a host to enter, and they decide it will be either Rachel, because of her dangerous attitude, or Toby because she is her granddaughter. During the Atafalxical ceremony Cassie is chosen as the host instead, she is asked if she accepts and Jake shouts "No". Cassie feels she has no choice, and says yes.
From Wikipedia (CC BY-SA 4.0).