AX AND THE ANIMORPHS HAVE KNOW THAT THE ULTIMATE DESTRUCTION OF THE YEERK POOL WILL GIVE THEM A HUGE CHANCE TO TAKE BACK TO EARTH.AND THEY'VE FIGURED OUT A WAY TO DO IT.BUT THERE IS NO WAY TO DESTROY THE POOL WITHOUT DESTROYING EVERYONE ELSE THAT MAY BE THERE. READ ON ANIMORPHS : THE SACRIFICE