On a sticky hot afternoon, Scuba diver Ben McDaniel set off on a cave diving adventure at Vortex Spring in Florida. He was never seen again. After dozens of exhaustive searches by law enforcement, first responders and the world’s top cave divers deploying remote underwater submersibles, Ben was never found. Did this adventurous, yet troubled young man fall victim to the dark recesses of the cave? Or was there a more sinister explanation for his suddenly vanishing from the face of the earth? This controversial investigative documentary explores three possible scenarios: Accident, hoax, or murder? This case has turned into a cult classic for those who enjoy mysterious, unexplained disappearances.