In this fly on the wall series we follow ten divers, including two from Australian as they train for one of the most dangerous professions in the world, Deep Sea Diving. Below the surface we follow their progress at a deep sea diver training facility at Port Bovisand, near Plymouth, England, as they face the challenge of zero visibility and the ever present danger of the bends. With the trainee divers forced to work as a team to survive, the pressure mounts, ultimately reaching disastrous levels: two students won’t make it and one will almost die.