Amy discovers a horse is being abused at Mallen's farm and convinces her mother to rescue him. On the way home, a raging storm sends their truck careening off the road.

Lou mistakenly sends Mrs. Roach?s horse, Swallow, home before his fear of traffic is cured. An unknowing Ashley is violently thrown off when the horse is spooked by a truck.

In order to drum up business for Heartland, Lou is organizing an open house. Amy is totally against it. After all, she?s managed to drum up some high profile clients on her own.

Lisa Stillman sends her nephew Ben to live at Heartland. While Amy and Lou are cleaning out Marion?s old room in preparation for Ben?s arrival, they come across an old letter written by their dad.

When Lou decides to make a promotional video to advertise Heartland, nobody is very supportive of the idea. But Lou is determined, perhaps even more than usual.

Lou's boyfriend, Carl, comes for a visit and his big city plans clash with the ranch's more laid-back lifestyle. Amy is puzzled by why a new horse at Heartland won't obey commands.

Lou isn?t pleased when a neighboring rancher brings a pregnant mare to stay at Heartland.

The pressure is on when a famous race horse, Gallant Prince, is sent to Heartland to see if it can be rehabilitated after being terribly burned and injured in a highly published stable fire.

A girl from Ty's troubled past gets a job at Briar Ridge and comes to Heartland looking for him. When Mrs. Bell goes to the hospital after a heart attack, Lou becomes attached to her pony, Sugarfoot.

Ty has a run-in with a cruel cowboy when the local ranchers round up some local mustangs for the veterinarian to test.

When Jack relents and allows Tim to visit Heartland, the simmering sibling rivalry between Amy and Lou heats to a boil.

Disaster strikes when the barn at Heartland erupts into flames and Jack is injured getting the horses to safety. Heartland may never be the same again after Lou discovers the barn isn?t insured.

With the Fall Finale only a few days away, Amy finds herself working with the enemy after Ben convinces Ashley that Heartland is the only place that can help her suddenly uncooperative horse.