- 1 hr 37 min
As the legend is told, the church was built atop the underground cave to protect the outside world against the winged creatures that called it home. In 1975, curious explorers set out to find riches in the abandoned abbey. They were never seen again. Thirty years later, a team of biologists and cave experts set out to explore the cavernous region. Will they suffer the same fate? Eddie Cibrian and Cole Hauser play expert cave explorers Tyler and Jack McAllister. The brothers partner with biologists who are trying to discover if a new ecosystem exists below the surface of the Romanian caves. Along for the adventure are a team of expert rock climbers and scuba divers. Part of the squad is Charlie, who is portrayed by actress Piper Perabo. Dr. Nikolai and Dr. Jennings, along with their photographer Kim, lead the scientific crew. While the biologists are wielding microscopes, Jack and his team bring along a key piece of equipment: SCUBA gear powered by lithium hydroxide, which can allow a diver to stay submerged for 24 hours. The two teams collaborate to carve out a 12-day journey to investigate the caverns, unaware of the danger that awaits them in their travels. Discussion of the legend occurs when shattered pieces of the old abbey are discovered prior to the descent below, but little attention is paid to the aerial creatures of the fable. The teams set up camp below as the first crewmember takes to the water. When he eerily goes missing, the mystery begins to build around a strange looking water mole that had attacked him on camera prior to his disappearance. The attack caused a collapse inside the cave, cutting off the team’s only known way to the surface. Matters are made worse when Jack barely escapes death when coming face to face with one of the winged monsters. Even though he lives, a severely wounded scrape seems to get more infected by the second. In the interim, more mutated beings begin assaulting the crew from both above and below the water. The biologists work steadily to discover exactly what these altered creatures are while the cave experts try to learn a way to escape the underground hell. As the group fights through both land and sea attacks at every turn, Jack’s condition worsens and he appears to be morphing into the very thing that is hunting the squad. As Dr. Jennings gets closer to an understanding of the infection and the mutants spreading it, Tyler and Jack work on destroying the enemy. The film culminates with an explosive battle and a shocking ending.