Everyone rallies around Jack as he struggles with the inevitable loss of a friend. Georgie gets some unwanted help with her schoolwork.

Ty and Amy’'s attempt to rescue an injured eagle in the mountains takes a dangerous turn.

When Ty helps Jack and Tim on a cattle drive, an accident jeopardizes their plans.

Amy and Cass work together to save a racehorse with a career-ending condition, while the arrival of a former girlfriend forces Tim to see his current relationship in a new light.

Georgie’s school project on Val Stanton inspires her to take a risk with Adam.

When Lou returns from New York she is forced to confront two interlopers: Heartland’s new ranch hand, and a trendy food truck that is threatening Maggie’s business.

Lou finds herself trapped at the Dude Ranch with Mitch, the new ranch hand, and they both reveal the circumstances of their recent pasts.

While trying to help Cass learn to handle a spirited horse, Amy discovers there is more riding on their success than she initially realized.

When their plans to get away are thwarted, Amy and Ty celebrate their first anniversary closer to home and Amy unveils a special surprise.

As Amy and Ty prepare for parenthood, they work together to resolve a dangerous pregnancy issue. Meanwhile, Georgie may be forced to give up something she loves when a demanding new Extreme Team coach arrives on the scene. Then, Lou has to decide whether she should tackle a new business venture that may take her away from the Heartland family. When Jack and Mitch work together with the herd, Tim is not ready to be pushed aside. And Georgie and Adam find the perfect way to celebrate an anniversary.

Ty performs surgery on a mare, while Amy and the family work to bottle-feed its twin foals.

Tim is caught in the middle of Jade's showdown with a new hotshot bronc rider.

When one of Tim's team-building events turns competitive, Georgie gets stuck partnering with Jade's cocky rival.

When Amy helps a mounted archer reconnect with her horse, she also unravels the mystery behind Spartan’s recent behavior.

When Lou is given a horse, Amy helps her sister nurture a connection with the animal while Lou wrestles with the implications of the unexpected gift.

Jack is shocked to learn the reason for an old friend’s unexpected visit to Heartland.

Tragedy strikes the community. Amy and Georgie try to help Tim's traumatized barrel racing horse. Jack helps Tim, Casey and the rodeo community pulls through a devastating loss. Jade gets her pro rodeo permit.

An unexpected guest arrives which makes Amy and Jack question the reason behind the visit.

Jake's unexpected arrival at Heartland forces Mallory to admit to Amy and Jack the real reason she came back to Heartland.

A secret from Jack's past threatens to change his relationship with the family forever.

Amy and the family pull together as the gravely ill Ty returns home and is admitted to hospital.