Five mountaineering friends, Anna, Julia, Tom, Joe, and Alexander, set out to explore a mysterious cave rumored to be filled with strange and unexplained phenomena. As they progress deeper into the cave, they encounter strange sights and sounds and eventually come face to face with a mysterious creature. They must fight for their lives against the creature and emerge from the cave victorious. Despite never being able to fully explain the strange events that occurred within the cave, the mountaineers emerge as heroes, their bond stronger than ever before.