When Jack's called away to help a friend, Lou takes the lead on a cattle drive, but things don't go as planned. As Lisa reunites with her sister Tammy, Amy's feeling disconnected from Nathan.

When Amy helps an old friend of Nathan's overcome his fear of riding a horse for his wedding day, she's caught wondering what the future holds for her. Meanwhile Dex must prove himself to Jack.

Amy and Lou Fleming, and their grandfather Jack, deal with life after their mother's death while a new ranch hand, Ty Borden, comes to live and work at Heartland.

As the family struggles to deal with Tim’s news, Lou throws herself into planning her high school reunion to impress an old rival. Meanwhile, Amy tries to stay focused as Georgie comes up against an unexpected challenge while beginning to train with Phoenix. And Jack fights to control his own emotions as Mitch pressures him to discuss the future of the cattle business with Tim.

Lou sends an uncured horse back to its owner, which causes friction with Amy. Ty builds Amy a jumping ring and Jack decides to keep Ty on at Heartland.

When Hollywood comes to Heartland, Amy is so starstruck, she loses track of what's really important in her life.

Ben Stillman arrives at Heartland and his treatment of his horse Red angers everyone. Ashley lures Ty to Briar Ridge with a job offer.

When an irate Grant, Ty's travel buddy shows up at Heartland to punch out Ty for "kissing Blair" the disclosure puts Ty and Amy's relationship in jeopardy. Meanwhile finding out that their marriage was not legal puts Caleb and Ashley into a turmoil. All the relationship drama makes Lou question her marriage with Peter.

Amy returns from Europe but finds herself struggling to integrate back into life at Heartland and her relationship with Ty.

Ty struggles with control issues when his mom stops by for an unexpected visit hoping to bond with her granddaughter, and Amy is forced to mediate.

Amy helps Lisa with Platinum Bow. Tim has a difficult visit with Shane. Katie leads a strike at Maggie's. Jack reconnects with his country music roots.

Amy's working with an Olympian's horse when Spartan's health suddenly declines. After Amy's high-profile client questions Amy's integrity, rumours threaten her reputation as a horse trainer.

High profile horse breeder Lisa Stillman asks Amy to help her with her horse, Promise. Lou holds a Heartland Open House to help bring in business.

Lou's boyfriend Carl arrives at Heartland with a couple of different proposals for Lou. His welcome, however, is both hot and cold.

When Ty comes back to Heartland, he quickly realizes that profound changes have occurred in his absence. Caleb, the new ranch hand, seems to have taken over both his job and his place in Amy's heart.

Amy finds herself caught in the middle of a family crisis when she tries to help a girl and her horse recover from what appears to be a freak accident.

Amy is roped into helping Tim project a positive image to the community, in hopes it will further his custody case for Shane.

Tim is trying to convince Jack to be his partner in the purchase of a bison bull when Miranda comes to Heartland for a visit and goes on a trail ride with Tim that could totally change their family dynamic.

Ty is torn between his past and his family at Heartland when an old friend asks him for help.

Amy and Ty work together to prepare a wild horse for overseas transport, but the horse’s temperament may be more than they bargained for.

Amy and Jack retrain Edwin's horse for carriage racing, bringing Amy and Edwin closer. Logan takes on his first client horse. Election night arrives for Lou just as the family faces a difficult loss.

When Amy returns to Pike River with Nathan to work with Search and Rescue horses, she’s confronted with memories of Ty. While Lou and Gracie track down a wolf, Jack finds his new ranch hand.

Lou decides to make a promotional video for Heartland. Ty's new job at Briar Ridge isn't going as planned. Scott gets Amy to help with a wild pony.

Tim's visit to Heartland causes sibling rivalry between Lou and Amy. Jack takes Lisa Stillman fishing on their second date.

Out for a ride along the river, Amy comes across an RCMP officer desperately trying to save a young boy from drowning. Scott misinterprets Nick Harwell's polo match invitation to Lou as a date. Mallory seeks Jack's advice on how to deal with her love life.