Into the Unknown

In their attempt to rescue a horse, Amy and her mother experience an accident, forcing Amy and the rest of the Bartlett family to pick up the pieces.

As things begin to settle at Heartland, Val Stanton spreads rumors and Ty misses a visit from his probation officer.

An "Open House" at Heartland allows Amy to demonstrate her ability, despite accusations from Val, and helps to bring in business.

A new guy, Ben, is staying at Heartland and wreaks havoc on Amy and Ty's relationship.

Lou drives friends and family to distraction as she arranges to have a video made to promote Heartland.

Lou's New York boyfriend Carl comes to visit, but his big city ways clash with the ranch's more laid-back style.

A pregnant mare, riding lessons, a horse show, and a cattle roundup prove challenging for all.

Amy tries to help a champion stallion and his trainer, who were injured by a stable fire. Mallory dispenses relationship advice.

Amy and Lou take in an elderly neighbor's pony and Ty's old girlfriend from the juvenile group home shows up looking for him.

Prize-winning rider Nick Harwell stops by Heartland. Mallory discovers a crooked ranch-hand who plans to sell a herd of wild mustangs to a slaughterhouse.

Amy and Lou invite their dad for lunch while Jack and Lisa take a fishing trip. Ty practices his cattle-roping skills.

A barn fire brings life at Heartland to a halt, including Lou's plan to move back to New York.

Amy competes with Ashley Stanton at a horse show and Spartan's abusive owner attempts to take him back.

Amy helps Nathan Pryce with a sheepdog competition while Heartland faces Pryce Beef competition and an impending water shortage, straining Lou, Jack, and Tim.

Caleb returns and helps Amy with a mysterious horse; the weather forces Lou to build a firebreak with the enemy.

The family faces the hard reality of a drought at Heartland and the hunt is on to find the best spot to build a new well. Meanwhile Katie worries about her grandfather's health.

The weight of the Hudson rumour mill leads Jack to make a surprising decision. While Amy works with a polo pony and sees a new side of Nathan in the process.

The whole family heads to the Hudson Rodeo. Emotions run high at the barn dance after Amy helps Nathan deal with a family emergency.

Lou, Amy and Lisa head to Vancouver for a girls' trip. Lisa is caught in the middle when truths are revealed between sisters that could threaten to tear them apart.

Amy works with a horseback-riding falconer whose horse is not getting along with her beloved trained hawk. Lou discovers the secret Katie's been hiding about her creative writing class.

Tensions boil over when Heartland and Pryce Beef face off at the Hudson Farmer's Market and Shane makes a surprise visit.

Jack and Tim try to mend fences with Nathan on a fishing trip; Amy and Caleb save a horse in distress; Lou finds herself in a dangerous situation.

Heartland hosts an Open House to bring the family and the community together, along with some old and new friends.