In a secluded monastery, a group of monks operates a clinic designed for the possessed. When young police officer Marek arrives, he disguises himself as a priest to investigate the strange vanishings of several troubled residents. As he delves deeper into the cloistered community, Marek uncovers dark secrets and realizes that escape from this eerie sanctuary may be impossible. The tension mounts as he navigates the unsettling world of faith and fear, revealing that some mysteries are better left unsolved.