A horse crazy young boy comes to Heartland and quickly bonds with Amy, but his mother has a secret that could change everything for the Fleming family.

Amy and Ty work through their trust issues as they train a pair of Clydesdale's, but it is an emergency at Heartland that reveals their true strength as a team when it matters most.

Tim is having no luck tracking down Miranda and Shane since she dropped the bombshell that Shane is his son... until Shane --on his own-- surprises everyone by just showing up at Heartland. And Mallory entertains the idea of going with the recently-single-again Jake to the Spring Fling. There is however --as you might expect with Mallory-- a "but" attached.

When Tim reveals to the family that Shane is his son it throws everybody for a loop and threatens to ruin the traditional Bartlett-Fleming-Morris naming ceremony for Lou's baby girl.

When Shane arrives to stay for the summer, Tim tries to impress all three of his kids with a really cool Western day trip.

When Ty visits Mrs. Bell to thank her for paying his school fees he and Amy are surprised to learn she’s moved out of her home, and away from Sugarfoot.

When Tim's young racehorse Cisco is stolen on the way to his maiden race, Amy and Ty get help tracking him down from an unlikely source – Ty's step-father, Wade.

When Amy bravely tries to heal an abused (and now extremely violent) racehorse Ty and Jack think she's finally bitten off more than she can chew.

When a mystery horse arrives at Heartland, Amy and Ty are sent down a path that will alter their lives.

Amy is having trouble dealing with a roping horse that only wants to buck and Caleb, who isn't sure he wants to ride broncs anymore.