As Jack and Joan prepare for her first southern hemisphere Christmas by the beach, a reef dive goes catastrophically wrong, and Joan does all she can to save an injured diver. With a young woman's life in the balance, Joan and Jack discover the accident is really a case of sabotage. The mystery hits home for Jack, who secretly seeks out a woman from his past to make amends for his mistakes.

In a small outback town on New Year’s Eve, Joan’s search for answers about Ian is waylaid when the motorhome runs out of fuel. Taking jobs as waiters, Jack and Joan are drawn into the illegal tobacco trade.

Jack reconnects with Elyse, the daughter of Rosemary, the bride Jack left at the altar. A surf lifesaving champion, Elyse believes someone tampered with a drug test, causing her to be banned from her sport just before the national championships.