In the series finale, Luke opens up about his struggles, Maggie throws one last Christmas party at the bar, and Colt gives Beau a heartwarming gift.

Colt realizes what he wants for his future, Beau and Maggie find some closure, and the gang celebrates Christmas at the bar.

Colt and Mr. Phillips search for Abby. Heather warns Rooster about Nick. An unexpected celebration brings everyone together.

Colt, Beau and Luke bond during a road trip to New Mexico. Back home, Abby runs into Mary and Nick.

Nick confronts Rooster. Running out of options, Colt reaches out to Lisa Neumann. Joanne urges Beau to make peace with Colt.

Beau tries to make amends with the boys, but it may be too little, too late. A job offer drives a wedge between Rooster and Colt.

Luke, Colt and Beau find Mary in bad shape in Nick's trailer. While Luke brings Mary back to the ranch, Colt and Beau wait for Nick.

Beau's at the end of his rope and decides to teach Colt and Rooster a lesson. Mary realizes she needs to choose between Rooster and Nick.

As Colt battles the elements, he leaves Abby a poignant message. Armed with a new perspective, Beau surprises Joanne.

Torn between the ranch and a job opportunity, Colt wonders what's best for his family's future. Mary offers to work at Maggie's bar.

Four months later, wildfires rage in Colorado. Abby wants to postpone the wedding, but her parents don't approve. Joanne stands up to a stubborn Beau.

Beau leaves the boys hanging about the Peterson ranch. Rooster takes Jen on a date. Colt and Abby fight about their future.

In the wake of his heart attack, Beau vows to stop sweating the small stuff -- but Colt and Rooster's latest blunder makes him lose his cool.

Beau and Maggie come to a decision about their relationship, but they don't see eye to eye about the ranch. The boys take Kenny out drinking.

When Colt lands in trouble covering for Rooster, he tries to cash in a favor. Beau invites Joanne to stay at the ranch. Colt plans a surprise for Abby.

Emotions run high when Abby and Heather fight, leaving Colt caught in the middle. Rooster faces the consequences of blowing off work.

Colt plans a special date with Abby. Rooster vents his frustrations to Maggie, while Joanne gives Beau some sage advice.

Jerry warns Colt that Lisa Neumann has a good case against him. And when Luke bails on work, Colt has to miss Peyton's baptism.

During a snowstorm, Colt and Abby head out of town, Beau and Joanne get cozy at the ranch, and Maggie meets a charming stranger.

Luke urges Mary to go back to rehab. The police find a gun near the trailer and make an arrest, leaving Colt struggling with his conscience.

Maggie stands up for Rooster when Beau kicks him out of the house. Meanwhile, Colt is torn between his brother and his father.

The Bennetts return to the ranch. Beau gets a business proposition from Neumann's Hill. A face from Maggie's past arrives with news.

Colt's new responsibilities keep him away from Abby. After a memorable night, Maggie ponders what she wants for her future.

Colt tries to round up the other ranchers to give Neumann's Hill some competition. After another argument with Abby, Colt signs the divorce papers.

When Colt Bennett returns home from Canada to try out for a semipro Denver team, he learns that his family's ranch has fallen on hard times.

When his inflated ego lands him in hot water, Colt realizes he's not the big man on campus anymore. Beau's doctor makes him trade in steak for salad.

Back in Colorado, Luke works to win back Colt and Beau's trust. Abby invites Colt to a teachers' mixer. Mary struggles to stay clean.

Rooster and Colt's long-simmering rivalry comes to a head on the first day of hunting season. But their bickering has an upside for Beau and Maggie.

Beau issues Luke an ultimatum. As Colt tries to prove himself to Abby, Luke makes him an offer -- but Mary drives a wedge between them.

Colt runs into an ex at Maggie's bar and reminisces with Rooster over a bottle of whiskey. Getting back in Beau's good graces is a losing battle.

Colt asks Abby to lie to the police. Joanne and Beau have a heart-wrenching talk about the future. Mary tells Luke she wants to go to rehab.

Colt hides the truth from Abby as their financial woes go from bad to worse. A drunken night leads to an awkward morning after for Mary.

Money troubles put a strain on Colt and Abby's relationship. Beau tries to get Luke help for his PTSD but refuses to bail Colt out of a jam.

An angry Beau clears Maggie's things out of the house. Colt tries to sort out his feelings for Abby and Heather.

Out on bail, Mary breaks into her old house to grab her stash. After a talk with Dale, Joanne has a change of heart. Colt and Beau confront Lisa.

Beau's softer side emerges when he takes Luke under his wing, but Colt doesn't trust his cousin. Maggie comforts an exhausted Abby.

A job opportunity in Denver threatens to drive a wedge between Colt and Abby. Maggie pushes back about the pipeline.

Heather makes a decision about the pregnancy. Mary reads Rooster the riot act for keeping it a secret, and Colt struggles with how to tell Abby.

While Abby's in Denver teaching, Colt works to rebuild the Peterson ranch. Rooster misses his first day of work.

Rooster and Colt try to prove themselves to Beau, but he doesn't have much faith in them. Colt gets jealous when he sees Abby and Kenny together.

Abby moves in with Colt and Beau when she learns she’s losing her job. Rooster and Jen the engineer bond over getting dumped.

As Heather's medical bills roll in, Colt realizes how expensive it is having a baby. A surprise visitor at the bar sweeps Maggie off her feet.

Wondering if he's ready to marry Abby, Colt seeks romantic advice from an unlikely source: Beau. Rooster hires a flaky new waitress.

At Colt and Luke's encouragement, Beau and Joanne plan a celebration. Abby asks Colt to go to counseling. Mary's downward spiral continues.

Beau ponders a lucrative business offer. Rooster runs afoul of the liquor board. Colt tries to make peace with Abby's dad.

Colt struggles to keep his relationship with Abby under wraps. The boys make a big purchase and try to sell Beau on a business opportunity.

While Abby and Colt struggle with parenting an infant, another new arrival shakes things up at the ranch. Maggie confronts Mary.

Colt smooths things over with Abby. When Maggie drags Beau to the Marriott for a romantic evening, the guys have some fun back at the house.