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.

The Heartland family must deal with Amy and Ty's decision about their future.

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.

Things turn dangerous for Amy, Tim and Georgie at a horse clinic.

While Amy deals with the panicked horse trapped in a trailer, Georgie heads off on a desperate search for Tim. Meanwhile, Bob and Ty tackle a difficult surgery to save an endangered bear cub's life. Back at the ranch, when Amy, Tim and Georgie are late returning from a clinic, Jack and Mitch get very concerned and head off to find them. And with the help of Lou and his girls, Peter makes a choice that assures his place in the Heartland family.

When Georgie unexpectedly struggles with a new challenge, Amy steps in to help her unearth the cause.

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.

Amy struggles with the feeling that something is not right with Ty while she and Jack strive to help the ghost horse.

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.

With Caleb and Cassandra's wedding as well as the birth of Amy and Ty's baby on the horizon, everyone is rushing to make sure both events go down without a hitch.