Often, while Applejack & Rainbow Dash spend time in Sweet Apple Acres, they race. It's always delightful for them to compete & gain appreciation for their abilities. However, while they take a break to eat some fresh apples, Applejack mistakenly eats an apple that's already been on the ground for too long... so she gets sick. Luckily for them, Fluttershy knows a thing or two about caring for ill individuals.