Amy and Ty face parenting problems, but healing a wild mare and her foal may help them find a solution. Meanwhile, Lou comes home with a big decision to make, but news about Mitch steals her focus. And Georgie struggles to overcome past fears when she's asked to do an interview for an equestrian magazine. Then, while Tim thinks about the next step in his relationship, Jack and Lisa could face future problems in theirs.
Amy and Ty plan a romantic trip to Pike River, but Jack tags along to visit his old friend, Will Vernon. Meanwhile, Georgie trains hard with Phoenix to prove to a potential coach that they're a great team, and Lou wavers on her decision regarding Maggie's Diner in New York City. And Tim makes a spur of the moment decision causing tension between him and Jack.
Ty is asked to mentor a troubled kid, but finding common ground proves harder than he expected. Meanwhile, Lou organizes a horse yoga retreat at the Dude Ranch, but she is taken by surprise when she learns who the instructor is and this subsequently leads to hijinks between Georgie and Wyatt. And as Amy works with a restless yoga horse she learns the real reason her dad is so keen on helping Jack and Ty build a treehouse for Lyndy.
Amy and Ty take Lyndy on her first camping trip, but things don't go as planned when they find an injured animal along the way. Meanwhile, when Jade takes a bad fall in a bronc riding accident, Tim and Georgie must convince her to see a doctor before she ends up in a dangerous situation. And when Georgie starts working with her new coach, the advice she is given leaves her questioning her priorities. At the same time, Tim makes a nuisance of himself in his new home, causing Jack to call him out. Caleb is back to stir things up with Tim, but isn't that what we expect?
Georgie enlists Wyatt's help in reuniting a famous trick rider with her long-lost horse.
When the new manager at Fairfield comes to them with an unusual concern, Amy and Ty find themselves at odds about how best to treat her horse.
Amy and Tim organize a team penning event for the family, but Tim manages to turn it into a town spectacle. Meanwhile Amy agrees to help Caleb when his horse acts out, but soon realizes the problem is not the horse. And when Jade is finally cleared to return to the rodeo, Georgie attempts to help her conquer her newfound fear of riding.
Lou returns to Heartland with an unconventional idea to attract guests to the Dude Ranch. Meanwhile, Georgie throws herself into training, but her dedication takes a massive toll on her relationship. Amy and Ty's suspicions are raised when a Fairfield horse wins a race despite an injury and Jack struggles to put together a homecoming present for Lisa.
Amy and Ty work together to treat a doped racehorse, but when it turns into a race against the clock Amy looks to an unexpected source for help. Meanwhile, Georgie pushes herself to a breaking point, and Lou and Peter must help her pick up the pieces. And Jack is at odds with Tim when Tim attempts to usurp his place at the head of the cattle drive.
After some tragic news, the family finds ways to cope with their grief. Jack retreats to his fishing cabin, but when he finds himself in danger it may be up to an old friend to save him. Meanwhile, Ty helps Luke with a school project, but Amy's grief leads to new discoveries about Luke's home life. As Mitch's wedding looms, Lou struggles to let go, and Tim is left to consider his own decisions.
When Jack finds out Will Vernon's wild horses are in danger, the family rallies behind him to bring them home. Amy and Ty face an important decision regarding Luke, but news from Clint may change everything. And while Lou tries to hold her peace about Mitch's wedding, Tim's goading weakens her resolve. In the meantime, Georgie wrestles with a decision that could take her away from her family, and Jack and Lisa reconnect after their time apart.