ADA RU thinks her parents are finally going to announce a Fitzhugh family vacation to Disney World the summer before seventh grade, until her father reveals he's taking a teaching position in Scotland and moving the family there for the entire summer. Ada Ru is anything but happy. She doesn't like their new home, she hates haggis, and she certainly doesn't like being away from her best friend all summer. Even worse, some people believe there is a lake monster nicknamed Nessie living nearby. That's when she meets another American summer transplant named Dax, and Hamish Bean Tibby-Hammy Bean for short-captain of the Nessie Quest tour boat. He knows everything about the fabled Loch Ness Monster and the official race to find it. But when the three unlikely friends join the monster chase by searching for evidence of Nessie's existence, they end up discovering more than they bargained for.