The Arrival
The Animorphs learn that the Animorphs have finally arrived, with a support troup to help the fighters on Earth. One of these is a female Andalite named Estrid, to whom Ax is required by literary law to kind of have a crush on. But there's also some internal conflict; the Andalites want to fight by themselves, feeling that the human Animorphs surely aren't skilled enough, and demand that Ax pick a side. And it appears from the sample chapter that all the Animorphs are questioning their motives. Should be interesting.