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.

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

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

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.

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

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

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.

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 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.

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

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.

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.

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.

One month later, tensions run high as Colt and Abby scramble to get ready for the baby. Lisa Neumann makes Beau an offer.

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

Beau shrugs off the doctor's orders and resists the family's efforts to help him. Meanwhile, Colt lashes out at Maggie.

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

Beau intervenes to keep Colt out of trouble. Abby and Colt follow a lead. Maggie returns to Garrison, and Mary wrestles with guilt.

Colt and Rooster worry when Beau has a change of heart about the calves. But that's just the beginning of the surprises that await the Bennett clan.

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

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.

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

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

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.

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.

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.

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.

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

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

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.

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.

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

Abby asks Colt for space, but he finds every excuse in the book to drop by. Luke and Mary tie the knot in Vegas. Lisa Neumann accuses Colt of theft.

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.

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.

Colt finally wins back Abby's trust -- but he's afraid to tell her he knows who killed Nick. Beau and Joanne look for a house together.

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.

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

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.

To celebrate their last Thanksgiving on the ranch, Colt and the guys go on a turkey hunt. Mary checks into rehab.

Abby gets a taste of her own medicine after a hazy night of drinking. Beau warms to the idea of mending fences with Maggie.

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

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

Beau gives Colt a taste of his own medicine. Mary asks Luke for help paying the mortgage. Colt confronts Abby about not getting to see Peyton.

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.

Abby invites Colt out for a birthday dinner ... which might be a date. But the plan goes off the rails after Colt has an argument with Luke.