In Series Four, people drift back to 'Heartland', craving the familiarity of home and family only to discover that everything seems to have changed. After the blush of first love in Series Three, Ty and Amy's relationship may blossom and mature, but only if they face up to a misunderstanding about what happened while they were apart. Lou is torn between her new life in Dubai and home. She's still madly in love with Peter but Dubai is not an easy place to live and she's intensely homesick. Tim will return with substantial winnings and a new love interest. As always, Jack remains the rock of Heartland, tirelessly keeping the family together through thick and thin.