Amy seeks out an up-and-coming show jumper to learn why he's refusing Scott and Ty's suggested treatment for his horse.

Jeremy forces Amy to make a tough decision about Phoenix when his horse, Buckingham, sustains a serious injury that threatens his jumping career.

When a local horse show is cancelled Lou saves the day for Georgie and Mallory by stepping up to host it at Heartland.

Ty's future as a vet is in jeopardy when there's a fatality at Scott's clinic.

In an effort to prove Jeremy was responsible for Buckingham's death, Ty searches for evidence.