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 must face his past mistakes when he's asked to help Elyse, the daughter of Rosemary, the bride Jack left at the altar. Elyse, a surf lifesaving champion, believes someone tampered with a drug test, causing her to be banned from her sport.