Plot Synopsis

Five of the UK and USA's finest young Naval officers put their careers on the line and risk it all to win the right to command a nuclear submarine. To become a sub commander, candidates must pass Perisher: a six-month long job interview from hell that culminates with four weeks of intense, sleep-deprived, non-stop naval warfare inside a nuclear attack submarine in the treacherous waters off Western Scotland. For four weeks they face 18-hour-days of tests, drills and full-force warfare as thirty NATO ships, dozens of helicopters, fixed wing aircraft, and special operations troops line up to fight both with and against them. The candidates are pushed to their breaking points as they're put through every possible worst case scenario in an effort to become the next Perisher recruit.