Dr. Dempsey is an American scientist who has become a skeptic. He isn't enthusiastic to be sent by his employer to Scotland to (dis)prove the existence of the Loch Ness monster. He finds the locals stubborn, 'primitive' and all but hospitable, not in the least because the Nessie legend is the only tourist attraction. He still gets romantically attracted by his independent inn-keeper Laura, and both her kid and his local assistant end up making him face a small family of Nessie-dinosaurs, but is this to be made public?