Amy must face one of the most heartbreaking decisions of her life; Mallory and Georgie suffer the events at the horse show in very different ways.
A fatality at Scott's clinic jeaopardizes Ty's future as a vet. Lou deals with Caleb who begins to act more like a husband and less like a hired hand.
Ty searches for the proof he needs to clear his name, by any means neccesary. Lou and Peter's romantic weekend is interrupted by Eden, Peter's ex-wife.
Tim welcomes Shane and Miranda back to Heartland and Lou stumbles upon a shocking secret.
