Applejack and Rainbow Dash put their skills and sportsmanship to the test as they face off in an Iron Pony competition to see who is the better athlete. Who will be crowned the winner, and more importantly, how will the loser handle defeat? Later, they take part in a mareathon event known as the Running of the Leaves, in which Dash must compete without the use of her wings. Can they both ensure a clean race without the competition getting the better of them?