Billy and Cody Lefever move to North Dakota hoping to cash in on the largest oil discovery in American history; Cody becomes uncertain about her husband's choices when Billy crosses paths with a powerful oil baron named Hap Briggs.

Suspicions abound following the robbery; Wick scrambles to hide his involvement in the crime that nearly killed his father; Hap's daughter arrives, which sparks a rivalry with his wife.

Hap invites Wick to participate in a new venture; tensions rise when Billy tries to get on board; a robbery suspect is arrested; Jules and Hap rekindle their relationship.

Intent on revenge, Billy turns to Clifton for help; Wick plans a huge birthday party for Jules; a confrontation forces A.J. to make a decision.

Lacey officially joins the family business making Wick's shortcomings more glaring; Billy tries to blackmail Hap; Sheriff Tip reveals to Hap that Wick may know more about the robbery than he's let on.

Friends and enemies unite after Cody is attacked; Billy seeks Wick's help as he tries to determine who is responsible for the crime; Carla is suspicious of Hap and Jules.

Billy and Wick form an alliance after leaving Gary for dead; federal agents trying to build a case against Hap approach Wick; Carla tries to expose her husband's affair.

When Hap nearly exposes Wick as the leak, Wick recruits an unlikely accomplice to help bring him down; Billy's lies start to catch up with him.

With Carla behind bars after taking the fall for the stolen report, Hap is more determined than ever to find the mole at Briggs Oil who put her there. But first, Annie pays Carla an unexpected visit to propose a deal that would give both women what they want. Meanwhile, Jules' brush with death brings both Briggs men rushing to her bedside, providing her with an opportunity to come clean with their secrets.

As Christmas approaches, Billy must choose between saving his marriage or staying in the oil game alone; Cody is tempted by another man; Hap and Wick's relationship is pushed to the limits at the Briggs Christmas Eve gathering.