Lou is forced to reconsider her choice to live and work at Heartland when her former New York colleagues arrive for a weekend equine retreat. Amy is unsure whether she can trust Ty.

With the annual Hudson Heritage Rodeo looming, everyone at Heartland gets roped into the action. Jack and Tim are forced to work together on the planning committee. Meanwhile, Lou is grooming Soraya to compete in the Queen of The Rodeo competition.

In the middle of a heat wave, a cattle truck loaded with thirsty and overheated horses pulls into Heartland. Ty can hardly believe his eyes when the driver turns out to be his dad.

Ty asks Amy to give their relationship another chance. Ashley makes a decision that surprises her mother and Lou. Cattle rustlers hit Big River Ranch, and the situation gets out of hand.

When Amy's teacher brings a horse named Boxer to Heartland, Amy learns a valuable lesson about fathers and daughters. Ty and Kit seem to be blissfully happy together. Lou catches Constable Rodriguez with another woman.

Lisa meddles in Lou's business and personal life with disastrous results. Lisa brings a "cursed" horse for Amy to treat. The beautiful Andalusian named Diva Girl has been returned to Lisa by multiple owners.

Clint brings two tough kids on probation to Heartland forcing Ty to deal with a part of his past he'd rather forget.

Lou resurrects the Hudson Derby, stirring up an age-old grudge match between Jack and Tim.

Amy resorts to desperate measures when her horse Spartan is mysteriously stolen and reappears sold to Wes, the man who set fire to the Heartland barn.

Amy heads into the mountains to visit a First Nations horse healer named Victor Whitetail, and leaves with a new understanding about horses, her mom and herself.

In the hopes of impressing Ashley, Caleb takes lessons in bulldogging from former rodeo champion Tim, who stubbornly refuses to acknowledge that he may no longer have what it takes. Kit and Ty sort out their lingering break-up issues as Ty assists Scott with the delivery of Kit's mare's foal. Lou invites Peter to manage his business from the Heartland facilities while his office undergoes renovation, and lives to regret it.

Victor Whitetail visits Heartland, leaving Tim to wonder if Victor was more than just friends with his ex-wife.

Relationships are on shaky ground when Kit's horse, Daisy, comes down with Strangles and are put under quarantine. Kit decides to stay at Heartland to be with her horse. But Amy loses it when she finds out that Kit brought Daisy to Heartland almost straight after a rodeo where many horses had come down with strangles! Pegasus catches it and that brings mixed feelings, especially for Tim.

Amy and Ty are at odds over his purchase of a vintage motorcycle while Caleb goes off to a rodeo in Montana despite Ashley's growing concerns about his life on the circuit.

Amy and Kit have to put their differences aside to on Caleb in a team-roping jackpot.