This three-part documentary series reveals exclusive access to Britain's biggest warship and the flagship of the Royal Navy, HMS Ocean, and her crew, a third of which are new recruits. The HMS has its own hospital, shop, police force, church, bank, laundry, gym and pubs, and it’s an assault weapon. The series follows a sensitive seven-month active deployment which will culminate in HMS Ocean becoming the first UK ship ever to lead a US task force in the Middle East. In episode one, HMS Ocean leaves Plymouth for the Mediterranean, and the army, navy and air force helicopter pilots are trained to take off and land on the ship just as a huge storm approaches.