TV-PG. Four months after Ty's disappearance, Heartland has a new stable hand and Amy has moved on.

TV-PG. Ty has returned to Heartland to find many things have changed.

TV-PG. Amy must make a decision about her birthday present from Tim.

TV-PG. As Lou's day with Scott doesn't go quite as planned when guests for the Equine Retreat show up a week early, everyone else goes on a cattle drive.

TV-PG. Heartland's Corporate Equine Retreat is now open for business, and Lou questions her decision to live and work at Heartland.

TV-PG. Amy helps a RCMP's horse.

TV-PG. The Hudson Heritage Rodeo starts and Amy risks her life to save Ashley.

TV-PG. On a hot summer's night, a truck full of sick and thirsty horses shows up at Heartland.

TV-PG. Ty decides to seek another chance with Amy. Ashley very much surprises Lou and her mother.

TV-PG. The state of Tim's health is in question. To the surprise of Amy and Lou, Callie makes an unexpected visit to Heartland.

TV-PG. Hollywood starlet and gossip-rag fodder, Mindy Fanshaw, arrives at Heartland. Amy does her best to keep her cool.

TV-PG. Lou's friend from New York, Mackenzie, is getting married at the ranch. Problems arise.

TV-PG. In addition to her job at Heartland, Lou decides to take on the oil industry, which has invaded Hudson.

TV-PG. Since Heartland did so much good for Ty, his probation officer, Clint, brings two troubled probation kids for the weekend.

TV-PG. Lou decides to resurrect the Hudson Derby to help their friend Mrs. Bell.

TV-PG. Once discovering that Spartan has been taken, Amy and Ty will stop at nothing to get him back.

TV-PG. Amy decides to take a short break from treating horses to visit a First Nations healer, Victor Wormtail.

TV-PG. With winter in full swing, Amy is concerned for the lives of the wild mustangs high in the mountains.