Wild Horses is the sixteenth episode in the fifth season of the CBC drama Heartland. It originally aired March 11, 2012.
Synopsis[]
Amy and Ty join Scott on a trip back to his old reservation to save a herd of wild horses from the dangerous EHV-1 virus. Tim is having trouble coping with his recent break up and the stress of his custody battle and starts to drink again. Mallory is having a big sweet sixteen party until she finds out some heartbreaking news.
Plot[]
Scott is asked by April, a woman from his past, to return to his reservation and vaccinate a herd of band horses which are in danger of being culled due to risk of EHV-1 infection (which they could transmit over a wide area). Amy and Ty assist, and Scott explains that his grandfather once oversaw the herd. Their first attempt to catch the herd goes poorly, but Amy devises a plan to use a captured foal to lure the herd back. They get close to the herd but gunfire spooks them. Scott confronts Don, a rancher who had lost three horses and is in favour of the cull, to not do it again. Amy's plan then works: the whole herd is fully inoculated and the cull is cancelled. Tim begins drinking again after ruining things with Janice and the custody case. Caleb knocks-out Tim for his abusive behaviour. Jack confronts Tim about how he is sabotaging his life. Mallory plans a huge sweet sixteen party for herself but cancels it when she learns her family are moving to Nashville. She feels sorry for herself and how she messed things up, but Jake gives her a cupcake for her birthday.