For as far as everypony knows, Diamond Tiara is a bully, and not only toward her classmates. She has formed a reputation in the whole Ponyville about it. Soon enough, it becomes apparent that not only her classmates are cautious of her.
Still, what makes a bully a bully? Is it family issues? Foolishness? Or is it loneliness?
Diamond starts to discover what being a bully really means when she spends a weekend without her friend Silver Spoon and instead, she finds a friend on something not of her world.