Following an abrupt transfer, Secret Service agents Pete Lattimer and Myka Bering find themselves in the middle of South Dakota at a massive, top-secret storage warehouse that holds every strange artefact, mysterious relic, out-of-this-world object and supernatural souvenir ever found by the U.S. government. Lattimer and Bering's new task, as directed by the warehouse's caretaker, longtime agent Artie Nielsen, is to investigate reports of unexplainable and paranormal activity in an effort to secure more peculiar and dangerous objects, and to help Artie manage the warehouse itself.