Amy meets a professional liberty horse trainer and is inspired to take her horsemanship to a new level. A leaky roof forces Amy and Ty to move into Ashley and Caleb's trailer.
Amy and Ty work through their trust issues as they train a pair of Clydesdales. A horse-crazed boy and his mom show up at Heartland and Tim learns about a son he never knew he had.
Tim and his girlfriend announce they are selling the ranch and moving to California, but one of Tim's old girlfriends comes back and claims that Tim is the father of her son.
Caleb's rodeo buddy Bryce returns from Afghanistan in a wheelchair and asks Amy to get his horse back into good condition so that he can sell it, but Amy would rather convince him to try riding again.
Bad publicity from Stewart Forrest's lawsuit against Amy has everyone at Heartland concerned. When Chase pulls his horses from training, Ty lends Amy his support and Lou does a little investigating.
When famous Olympic trainer Stewart Forrest hires Amy to coach his Olympic hopeful daughter, Amy feels that he's pushing her and her horse too hard. Ty is concerned when Amy asks Chase for help again.
Amy finds herself overwhelmed after promising to "de-sensitize" three horses for the local police. Amy returns the last of Ty's things and he continues down his road of confusion.
Caleb needs some cash for a down payment on his trailer lot, so he enters a team roping event, but Amy is upset when he asks Kit to be his roping partner.
When Tim decides not to enter his horse in the big race, his girlfriend Janice agrees to ride for a competitor. Badger discovers the car he bought is stolen and must get rid of it.
Peter returns from Dubai to find out what's going on with Lou. Amy and Ty convince Sarah, the town hermit, to let them treat her sick horse at Heartland.
As graduation looms, change comes to Heartland. Amy is offered a full scholarship from an equine program at a university in Colorado. To Mallory's chagrin, Badger comes to work as a hand at the ranch.
Mrs. Bell has an accident in her pony cart and Ty needs to treat Sugarfoot at Heartland. Lou has extended her stay at the ranch and is ducking calls from Peter, who's still in Dubai.
Amy scratches the surface to discover Nick's problems with his horse. Meanwhile, Lou is home for a visit after finding Dubai may not be all that she hoped for.
Finding the ranch too much to handle by himself, Jack is anxious for folks to come home. Lou is in Dubai while Caleb and Ashley are on the rodeo circuit.
Victor Whitetail makes a surprise visit to Heartland, which stirs up the past and leaves Tim wondering if Victor was more than just friends with his ex-wife.
While the boys head off on a fishing trip, the girls are left back at Heartland to deal with the havoc caused by a dog, a porcupine and a herd of escaped cows.
Amy leads a rescue search to find Ty and Scott. With Scott near death, Ty must help him survive.
Amy is upset when Ty flies off with Scott to a remote veterinarian call on his last day before heading to school.
Ty protects his mother Lily from his abusive stepfather, who shows up at Heartland to win her back.
When Tim buys a racehorse from Lisa, he puts everything on the line, including Amy, to win big.