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Season 12 opens with Amy and Ty trying to balance life with a toddler and their perpetually busy schedules. Realising their long-time goal of working together turns out to be the solution. But the decision presents inevitable ups and downs that at times threaten their faith in one another. When a newcomer arrives at Heartland, Amy and Ty are confronted with an impossible choice that could change their family forever. Meanwhile, Georgie enlists a new coach and faces immense pressure to reach the next level, causing her to make challenging sacrifices. In order to support her daughter, Lou is spurred into making a decision about her expanding business in NYC. At the same time, Jack and Lisa confront problems in their relationship when Lisa is faced with a troubling family situation. Jack and Lisa confront problems in their relationship when Lisa is faced with a troubling family situation. In the meantime, Tim makes drastic life changes leading to a further rift between him and Jack.