A school project opens a door to Georgie's past that could ultimately change her life at Heartland. Meanwhile, Casey expresses interest in buying one of Ty and Caleb's bulldogging horses and Caleb enlists Amy's help to train it in order to secure the deal. Then, while celebrating their first big sale, Ty tells Caleb that he wants to officially pull out of their business partnership, which results in Caleb forging an unlikely alliance. And Tim is forced to come clean about his senior rodeo circuit dreams when he learns that Casey is buying a bulldogging horse for him