Katie Hargrove is being stalked by a dark figure from the past. It started with a frightening phone call, but soon Katie sees strange cars following her and parked outside of her house. The Police can do nothing to help her. Her family fails to protect her. The caller is playing games with Katie, but on the night the game ends, Katie will discover she has a guardian angel that she never knew.
The Yung Dudes are an internet sensation. Their videos of crazy stunts and daredevil tricks have millions of followers. For their next adventure the Dudes want to explore an undocumented cave. They are soon separated and wandering through the caves alone, with no idea how to get out. If things weren't bad enough, they are being pursued by something that no one knew existed. The Dudes not only have to find each other, they have to find a way out before the stalking beast catches up to them.