AppleJack is always busy, but because it's winter, she doesn't have much to do. So while she tries to find out what to do, saying that she's busy, Rainbow starts teasing her. When she does that, AppleJack just ignores her, but after a couple weeks AppleJack finally tries a secret prank she's been planning a long time. But what happens when the prank almost tears apart AppleJacks and Rainbow Dash's friendship?