Amy tries to pretend that nothing has changed when Ty returns to Heartland with a surprise guest.
Amy scratches the surface to discover Nick Harwell's problems with his polo ponies, Lou's life in Dubai and Tim's relationship with his jockey are not what they appear to be.
When an unspoken attraction re-surfaces, Amy discovers that honesty might be the best policy, but it certainly isn't the easiest one.
A looming high school graduation and Spartan's near fatal bout with colic force Amy to face where her future really lies.
When Amy and Ty convince Sarah, the town recluse, to let them treat her sick horse at Heartland, the family helps her face the ghosts of her past..
Tim enlists Amy to ride Lightning Dexter in a big time stakes race when he finds out his girlfriend, Janice, has teamed up with the competition...
Amy and Kit have to put their differences beside them when they take on Caleb in a team-roping jackpot.
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 hid bad old days at the group home.
Lou comes back from Dubai to spend time with the family. Ty and Amy discover where her father's rustled cattle are being pastured and the whole family rides out to bring them back. Meanwhile Ashley's mother offers to give Ashley the lot that the trailer is on if she'll get Caleb to sign a marriage contract (pre-nup).
When an irate Grant, Ty's travel buddy shows up at Heartland to punch out Ty for "kissing Blair" the disclosure puts Ty and Amy's relationship in jeopardy. Meanwhile finding out that their marriage was not legal puts Caleb and Ashley into a turmoil. All the relationship drama makes Lou question her marriage with Peter.
Tim decides to enter his racehorse, Lightning Dexter, in claiming race despite Amy's objections. Amy and Ty's troubles are aggravated when Chase comes to town and offers to put in a bid on Dexter. Meanwhile Lou finds out that she's pregnant and though Peter comes home, he really needs to be in Dubai
Jack resists taking a trip to France with Janice while dealing with some old memories resurrected by remodeling Marion's room into a nursery. Caleb asks Ty to be his best man but has difficulty asking him to move out as Ashley wants. Amy agrees to be a bridesmaid at Ashley and Caleb's wedding.
Amy finds that she's over-committed when she promises to "de-sensitize" three horses for the local police. Deciding that she needs help she calls in Chase. Meanwhile Amy's returning the last of Ty's things throws him and when Jack discovers that Ty is skipping classes and not showing up to help Scott, Jack proposes a road trip.
Amy must deal with Stewart Forrest's unrealistic expectations when she works with his daughter and an elite jumper that may be too much horse for the girl to handle.
Lou helps Amy fight the lawsuit to save her sister's reputation and family business.
A paralyzed military vet and ex-rodeo cowboy hires Amy to help sell his roping horse.
A horse crazy young boy quickly bonds with Amy.
Amy and Ty work through their trust issues.
