Aboard the Australian Collins Class submarine, HMAS Rankin, crew and boat are being tested to the extreme to prove they are up to the challenge of a long overseas deployment.
HMAS Rankin, begins her big adventure. The arrival of female submariners onboard causes problems and mechanical failures threaten to curtail the journey.
HMAS Rankin, continues its journey and home life slips further away. On reaching Korea, the crew celebrates landfall.
A submariner's worst nightmare - trapped on the ocean floor. Australian Collins Class Submarine, HMAS Rankin, sinks to the bottom of the ocean and waits to be rescued by allies.
HMAS Rankin, departs Japan for Hawaii - a three-week journey through oceans nine kilometres deep with no possibility of landfall in between. A cat and mouse war game with the US Navy begins.
The climax to the series. Will the Australian Collins Class Submarine, HMAS Rankin, out manoeuvre the US Navy in a cat and mouse war game leading up to RIMPAC - the world's biggest Naval exercises involving 300 vessels from eight countries?