Amy discovers that a horse named Spartan is being abused at Mallen’s farm and convinces her mother Marion to rescue him. A storm on the way home sends their truck and trailer off the road. When Amy wakes up, she’s in the hospital and discovers that her mother died in the accident. Amy’s sister Lou comes home from New York to help. Refusing to put Spartan down, Grandpa Jack brings the horse back to Heartland hoping that Amy can help him. Before Amy can help Spartan, she has to come to terms with what happened to her mom. A boy named Ty who was hired by Marion before she died comes to work at Heartland. He is on probation, and Amy immediately dislikes him.