Overview:While Amy deals with the panicked horse trapped in a trailer, Georgie heads off on a desperate search for Tim. Meanwhile, Bob and Ty tackle a difficult surgery to save an endangered bear cub's life. Back at the ranch, when Amy, Tim and Georgie are late returning from a clinic, Jack and Mitch get very concerned and head off to find them. And with the help of Lou and his girls, Peter makes a choice that assures his place in the Heartland family.