The Circuit is set in the Kimberley region of North Western Australia. It is a place of two seasons; the wet and the dusty dry. Known for its beauty, vastness and hardship, this region is a land rich in history for its traditional owners.

A flurry of racist leaflets and a lack of faith in him by the people he is trying to help put Drew in bad temper.

The race to save a young girl from abuse is on, but the law, and the predator's ties with the community and court, make the task seemingly impossible.

It's festival time in Broome, and what begins as a relaxing weekend quickly spirals out of control.

In the aftermath of the festival, Archie and Clarry face court and potential prison-time. Sam makes a tragic discovery about his son as Drew makes a regretful decision about seeing his family.

Clarry struggles with prison, as a predator returns to the Mission bringing trouble with him.

Facing new cases, new dilemmas, Aboriginal lawyer Drew Ellis' sweaty, dusty journey on the traveling court is interrupted by tragic news. The circuit team is devastated, particularly Bella, who seeks solace in Drew's arms.

Sam is back from looking after his son, and Drew and Bella's relationship continues in secret, but Magistrate Peter Lockhart's decisions at The Junction push the community to the edge of anarchy.

The inquest into Clarry's death is as tough as everyone feared, but first Peter has to deal with the fallout from The Junction riot, while Drew's argument with Mick over his son's future draws unexpected hostility from Bella.

New magistrate Terri Oliver's tough love approach is making life hard for the ALS team. While Peter continues to battle an inquiry into his professional conduct, Archie inadvertently resurrects a ghost from Sam's past.

Now back in the chair, Magistrate Peter Lockhart's standing is under threat when he is discovered helping disgraced elder Harry Pope, and a confrontation with Mick results in a surprising invitation for Drew.

Drew's journey "home" is complete as he walks the land of his ancestors with Mick and the elders. Sam and Louise's wedding doesn't go off without a hitch, but Peter finally has a win at Jalwarra.