After going on a blind date with an SAS commander, Kate believes her love life is starting to look up. When a French naval captain attempts to seduce Mike, he has to call on all his diplomacy skills. An illegal fishing boat is the subject of a perilous boarding.

The crew find a boy who has found a cache of guns. The boy is later kidnapped which ends up ruining a date for Kate and Jim. Meanwhile, one crew member faces losing the love of his life.

Unresolved romantic tension has a dramatic effect on some of the Hammersley crew, after a savage mortar attack by insurgents on the Samaru island of Minatu. Mike and Jim are both critically injured during a bold rescue mission on Samaru. Meanwhile, Kate is made acting CO of the Hammersley.

It’s up to Kate to handle a volatile beachside confrontation, and the medical evacuation of Mike.

A suicide bomb attack in a nightclub has a shocking impact on the crew of HMAS Hammersley. Dutchy goes undercover with the SAS to capture a group of deadly extremists before they can attack Australian targets. 2Dads risks his life to save Hammersley from a bomb attack. Kate's world is rocked when her former lover, SAS officer Jim Roth, returns to Hammersley. Mike risks his career by refusing to co-operate with a high ranking ASIO spy.

Kate is hunted down by an obsessed criminal after she kills his accomplice during a boarding. When Bird is kidnapped, the crew fears she will be murdered as payback.

Swain is obsessed with the mysterious sinking of a refugee boat. The crew uncovers a smuggling ring with a deadly method of sneaking goods into Australia, and Bird's romantic life is complicated when Mike's godson Ryan joins the crew of Hammersley.

As part of the boarding party checking a possible FFV, Dutchy doesn't hide his surprise at seeing one of the crew is SAS Captain Jim Roth. His flash of recognition is noticed by the ship's master, and the question now is, has Jim's cover been blown? ASIO "spook" Madelaine Cruise is furious. She confirms that Jim was on a mission and insists CO Mike Flynn shadow the vessel in case Jim needs assistance. And so he does, after Dutchy sees two men fighting on the deck, and the subsequent boarding party finds an area awash with blood and Jim under a tarpaulin with a serious head wound.

When one of their mates is kidnapped by terrorists, the crew of Hammersley is in a desperate race to save his life.

Tragedy rocks HMAS Hammersley as the crew races to prevent a terrorist attack on a busy Australian port. Meanwhile, Kate and Dutchy discover ingredients for a radioactive 'dirty bomb' are being smuggled into Australia on illegal fishing boats, and Mike is stunned to realise SAS Officer Jim Roth has proposed to Kate - will he let the woman he loves marry another man?