A secret from Jack's past threatens to change his relationship with the family forever. Meanwhile, Amy tries to uncover the connection between her new client and the unusually secretive Jack Bartlett. An incident spooks the Heartland horses, causing Phoenix to bolt, and while searching for her horse, Georgie comes clean about her true feelings for Adam. And as for Ty, he grows increasingly ill as he attempts to get back to Amy.
Life is hard on the Flemings' ranch in the Alberta foothills where abused or neglected horses find refuge with a kind, hard-working family. Debts abound and the bank is about to foreclose. Can they keep the ranch running?