 German BND Agents Skullsky and Müller are called to a case of a missing Heavy Metal Drummer. He was transformed to a chicken by aliens who want to buy land from his father Alois  farm. Unfortunately for son Wolfgang, whose promising music career in their Speed-Country-Metal-Band is now at least temporarily paused, the aliens turn to more aggressive business manners to persuade Alois Brückl to sell his land, where they want to build an intergalactic gas station. Skullsky and Müller are overwhelmed by the evidence laid out before them and puzzled after questioning the other band members and the "The Lone Gunman" from Bavaria. The final showdown features a meeting with the aliens, who are not quite as you might imagine. Case closed... Can a X-File ever be ?