Pilot Alan Glenn in the new commander of Hero. His first trip is to check out an immobilized Soviet submarine, which as surfaced in the Arctic.

When the Hero is asked to intercept a vessel suspected of drug smuggling, Commander Glenn's loyalties are divided.

As Lt. Cmdr Beaumont considers taking unpaid leave for a yachting expedition, the HMS Hero encounters another lone yachtsman who's more experienced than he seems.

With the Hero in dock, about to take part in an important naval exercise, Commander Glenn is persuaded to spend the weekend with an old flame, and her husband. In his absence, Lieutenant Peek gets on the wrong side of the dockyard workers, and soon has the crew embroiled in a Union dispute.

Hero's continued lack of success in anti-submarine warfare exercises against HM Submarine Ovid rattle Captain Glenn's self-confidence and cause increasing tension between him and his officers.

A young nautical engineer has developed a new system of rudder stabilisation, and the Hero is chosen to test it.

Regulator Fuller is put in charge of 3D mess in a bid to curb the unruly behavior of AB Grogan and Smith who are picking on Seaman Dorrity.

An officer on board a neighbouring vessel dies in strange but unsuspicious circumstances. Unsuspicious, that is, until the body of an old girfriend of his, is washed up ashore on the same day.

With Commander Glenn now in charge of HMS Hero the ship prepares for a naval inspection. Assisting Rear Admiral Staunton in this task is Mark Nialls, formally much respected captain of HMS Hero.

Commander Glen's brother, Eddie, faces dismissal from the RAF after an unauthorised low flying stunt above a moving vehicle.

A Panamanian luxury yacht has gone missing, along with its millionaire owner and his family. After an RAF Nimrod on reconnaissance spots a similar yacht, several hundred miles from the missing yacht's last known position, the nearby HMS Hero is ordered to investigate.

When his wife arrives in port from Glasgow, Fuller doesn't get the nice surprise that the crew suppose. Meanwhile, the Chief Petty Officer, who has recent marital troubles of his own, faces possible disciplinary action for allowing his problems to affect his work.

Following a fire at a MoD scientific station, on an island called North Krona HMS Hero is ordered there. They are to deliver bulk feed items and offer any assistance with any rebuilding they may require.

Ex Polaris submarine captain Edward Holt is in command of HMS Hero currently on duty in the Hong Kong area.

An executive jet flying a routine trip to Singapore issues a mayday call and is forced to ditch at sea. Captain Holt and the crew of HMS Hero are ordered to investigate.

One of the islands in the vicinity of Hong Kong now has a large oil field, to which the UK would like favorable concessions. To show the British presence, HMS Hero drops anchor in the port and Captain Holt and his crew practice their diplomacy ashore.

Hero is asked to help the Hong Kong police catch wanted murderer Victor Chelten, a former businessman with mental issues who has escaped by boat.

Whilst watching a naval helicopter exercise HMS Hero rescue a Chinese girl from the water. When they return to Hong Kong it is with the assistance of the police that the mystery starts to unravel.

HMS Hero is docked at Eddowes Island, which is about to be handed over from British rule. The locals are welcoming to the Hero's crew, but they're opposed to the handover, and some are resorting to violence. The Hero's crew are asked to help keep the locals in order, which worries Captain Holt, and Lt Napier in particular.

HMS Hero is now on its way back from Hong Kong. As they move closer to Portsmouth harbour the ship's crew prepares for shore leave.

HMS Hero's overworked pilot accidentally flies into the RNR manned HMS Rillington's firing exercise. He spends the next exercise on HMS Rillington while their irritating Lt Mannering inflicts his bragging on Hero. An emergency then occurs.

Having returned from an exercise the HMS Hero crew are needled about the state of their ship by Captain Calder.

The new officer on HMS Hero is a Special Duties commission: in this case, a former Petty Officer. He attacks his new role perhaps too vigorously and this is not helped by being unable to mix well and so learn from the other officers.

Whilst observing a Russian ship, HMS Hero finds and takes aboard an experimental unexploded mine.

As HMS Hero continues to steam home to Portsmouth, the RAF drop a post package for the crew. For Able Seaman Blane this starts unsettling rumours as to the state of his marriage back in his home village.

After an uprising - in which five British citizens have died - Hero and Bulwark are deployed to Dubarr in order to pick up evacuees. Captain Holt's girlfriend, journalist Zoe Carter, is one of the people trapped in the country.