After a vehicular collision with the enigmatic Jack, Joan's first stop in her investigation into her husband's betrayal brings them to a waterside paradise where a tragic death puts a stop to the party.

Jack takes a detour to a banana plantation to help his longtime friend and former brother-in-law, Declan, recover a cache of stolen guns; it soon becomes clear that there is more to the gun theft than first appeared.

When a high-end caravan is stolen, everyone becomes a suspect; it also turns out that everyone has something to hide; Joan's frustration with Jack puts her life in danger after thieves return to steal her motorhome.

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; Joan and Jack later discover the accident is really a case of sabotage.

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.