Two plotlines in this one. The valley of free Hork-bajir is discovered by the enemy, and the Animorphs scramble to deal with that. They want to relocate the colony but the Hork-bajir refuse, insist on standing their ground and fighting even though they are hugely outnumbered. Marco\’s parents are oddly uninvolved in the planning- I got the impression they were just standing around in the background looking stoic. They never said anything! Anyway, at least there\’s a new interesting morph in this book- beaver. Part of the plan is to expand a beaver dam they found upstream, so it will hold back enough water that when they break the dam it will flood the valley and wipe out the enemy. Although the amount of time they had between completing the dam work and releasing the flood, didn\’t seem enough to me, to build up the volume of water they needed. I don\’t know.