Barbara Cupisti stars in this tale of aniarcheologist who goes missing whilst attempting to set a new isolation record in deep caverns beneath a church. Four of his collegues join with two geology students and venture into the caverns to find him. Whilst inside the labyrintine chambers, they stumble across a huge crypt containing an old Latin-inscribed tablet telling of an order of monks who were executed during the inquisition exactly 700 years ago.