A group of high school students trapped in a catacomb fight for their lives against a ruthless and mysterious killer.

SYNOPSIS:

Sicily. Ten years ago. A couple of archaeologists dig for ruins in an excavation site. One of them, ANGELO, 35, finds an early Christian tablet but it breaks and he falls into a dark grotto, where he hears a metallic screeching and sees a painting with a gold liquid coming from it. After After bumping into the hanging corpse of his colleague, Angelo falls into a trap and is murdered by an L-shaped hook-blade strapped to an arm.

Sicily. Present day. A group of high school students travel by minibus to St. Lucius's Catacomb, a huge subterranean cemetery about to be opened. They’ll have the privilege of being its first visitors. MR. COLEMAN, 50, a widower teacher, leads the group; his lively son SCOTT, 18, and DENISE, 18, an overprotected girl whose father recently died in a car crash, are part of the expedition too.

The group arrives at the catacomb but there is no one at the entrance. Mr. Coleman heads downstairs and is startled by a security guard, PIETRO, 50, and MR. SIMONETTI, 50, the man in charge of the catacomb. Simonetti tells him that there are still hidden parts of the catacomb and that there were some acts of sabotage in the past. Coleman gets upset but finally, when everything indicates that the group is going to leave, they agree to go through with the tour of the site.

As the group travels into the catacomb, Simonetti explains that St. Lucius is an unknown figure, perhaps the leader of some odd Christian cult. Meanwhile, at the entrance, an unseen prowler drags a L-shaped hook-blade along the stone floor. The noise catches the attention of Pietro, who is brutally murdered. Before being also killed, PAOLO, 50, the minibus driver, finds Pietro's gun and fires a shot, which causes a rockfall on the entrance. Simonetti and Coleman go up to

investigate and find traces of blood. A huge stone blocks the entrance now...

THE CATACOMB