When an abandoned truck is found in a cattle station, Senior Sergeant Emma James and Detective Jay Swan are tasked with investigating what happened to local boy Marley, the driver. CCTV footage shows that he was with Reese, a backpacker, who is also missing.

Marley's uncle, Larry, is released from prison, but the town is less than enthusiastic to receive him back. Jay and Emma investigate whose blood they found on the road, then Reese's girlfriend, Georgia, arrives in town and gives the police information about him.

After a confrontation between Georgia and Shevorne, who both claim to be Reese's girlfriend, pressure builds on Shevorne to tell the police what she knows. Jay and Emma search Larry's compound, while Jay's daughter, Crystal, gets a job with the local rodeo.

The return of a Boulder Ridge resident arouses Jay and Emma’s suspicions. Elsewhere, Crystal argues with her mother, Mary, about staying in town, and Mary takes out her frustrations at the bar.

Emma is put in a difficult position when a body turns up which causes friction between her and Jay and a memorial request prompts Emma to research her family’s land.

In the thrilling series finale, Emma confronts her brother about the land deal, while Jay tries to find out what really happened to Shevorne.