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.

Hap confronts Wick. Lacey plays detective. Billy and Cody struggle. Annie gains a surprising ally. Carla is offered a deal she can't refuse. Jules learns some disheartening news. A lucrative oil deal hangs in the balance.

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.