Hewlett Aldershot III, the 2nd ranking person in the Secret Service, is in a Yeerk controlled hospital with a coma. Visser 3's best doctors have been unable to wake him up. The Animorphs and Ax go to acquire his DNA by morphing into mosquitoes in order to suck up his blood. However, they get yanked to Z-Space and end up fighting on Leera. However, the moment they return from their Leeran vacation and bite Mr. Aldershoot, he wakes up! How in the world did mere mosquito bites wake up a comatose man that Visser 3's best and brightest could not?