Lou isn't pleased when a neighbouring rancher brings a pregnant mare named Melody to stay at Heartland. Ty is astonished when Jack asks him to join him on a cattle roundup.

An old girlfriend of Ty's shows up at Heartland and stirs up trouble. Lou is reunited with Sugarfoot, Mrs. Bell's miniature horse.

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.

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.

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

Amy and Ty spend the night in the "haunted" Hanley barn, trying to get to the bottom of a mystery.

When Tim buys a racehorse from Lisa, he puts everything on the line, including Amy, to win big.

When an unspoken attraction re-surfaces, Amy discovers that honesty might be the best policy, but it certainly isn't the easiest one.

When Amy is hired to do a horse clinic with a group of inmates, Ty is surprised to discover that one of them is a friend from his bad old days at the group home.

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.

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 tragedy strikes Amy must find a way to save Mr. Hanley's rescue horses from kill buyers.