When David's grandma wins a hotelier award and goes to accept it on another planet, security officer Tate assumes full control of the Intergalactic Bed & Breakfast. His decision to put the alien tourists on total lockdown doesn't go over well, however, and most of the guests vacate. Tate decides to retrieve Grandma, leaving David and his friend Amy home alone. Running the B&B when there are only a few guests should be a breeze, especially for two kids who saved the universe just a few weeks ago. But soon David and Amy (and alien pooch, Snarflle) are faced with such problems as a lost alien, a pair of gate-crashers, and a potential horde of UFO-watchers descending on the inn. Middle grade readers will be over the moon about this third kooky comedy featuring an assortment of hapless humans and admirable aliens.