Theres a hotel in Spain that is ran by two overly religious sisters that tend to judge their guests very harshly. In fact, they are killing them off one by one for sinning against their lord. Marta (Aurora Bautista) and Veronica (Esperanza Roy) are creepy and mysterious and immediately draw the suspicion of Laura (Judy Geeson), one of their guests. Laura begins suspecting that they are killing guests and begins investigating. When she gets too close, she comes face to face with the evil sisters and their wrath, leading to a mediocre conclusion.