A woman’s corpse is discovered in a meadow, and a strange combination of letters and numbers has been tattooed on the soles of her feet. Detective inspector Beatrice Kaspary from the local murder squad quickly identifies the digits as map coordinates. These lead to a series of gruesome discoveries as she and her colleague, Florin Wenninger, embark on a bloody trail --- a modern-day scavenger hunt using GPS navigation devices to locate hidden caches.