Tim is having no luck tracking down Miranda and Shane since she dropped the bombshell that Shane is his son... until Shane - on his own - surprises everyone by just showing up at Heartland. And Mallory entertains the idea of going with the recently-single-again Jake to the Spring Fling. There is however - as you might expect with Mallory - a "but" attached.
When Tim is coerced to go with Jack on a secret mission Amy is left back at Heartland with Janice to get a young race horse ready for his maiden run meanwhile Ty has planned Amy a dinner but there has been an animal hiding in the trailer so they make a slight change of arrangements.
When Tim reveals to the family that Shane is his son it throws everybody for a loop and threatens to ruin the traditional Bartlett-Fleming-Morris naming ceremony for Lou's baby girl.
When Amy works with a chuck wagon horse she discovers an impediment that could put the entire team in danger and change the dynamics of a prominent chuck wagon family.
Amy helps to restore the confidence of a troubled, young trick-rider so that she can get back on her horse and perform again.
A friend from Jack's past shows up at Heartland when one of their old band mates passes away. Lou & Lisa secretly try to gather the other remaining members for a reunion performance to celebrate Jack's birthday.
When Shane arrives to stay for the summer, Tim tries to impress all three of his kids with a really cool Western day trip.
When Ty visits Mrs. Bell to thank her for paying his school fees he and Amy are surprised to learn she's moved out of her home, and away from Sugarfoot.
When Tim's young racehorse Cisco is stolen on the way to his maiden race, Amy and Ty get help tracking him down from an unlikely source - Ty's step-father, Wade.
When Amy bravely tries to heal an abused (and now extremely unhappy) racehorse Ty and Jack think she's finally bitten off more than she can chew.
Ty's mother Lily returns to Heartland with shocking news about his father, and a secret that threatens her relationship with her son.
When Jack learns Ty is riding his bike solo to a remote lake to spread his father's ashes he decides to surprise Ty and join him for this meaningful road trip.
In an attempt to avoid hitting a wolf, Ty is badly injured when he crashes his bike on a remote road, leaving Jack to search for help in the middle of nowhere.
Amy is roped into helping Tim project a positive image to the community, in hopes it will further his custody case for Shane.
Amy must find a way to save rescue horses from hug buyers.
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.
When Amy's dog, Lobo, is injured by a trigger-happy rancher, it's up to Ty to save his life. Meanwhile, Jack goes to Moose Jaw to persuade Miranda to come back to heartland to help sort out Tim's struggle and Mallory tries to raise money to help her get an apartment so she will not have to move to Nashville.
When a mystery horse arrives at Heartland, Amy and Ty are sent down a path that will alter their lives. Ty is going to ask Amy to marry him.