Twilight conducts a experiment on her Miss Smarty Pants doll that causes the doll to become a real pony. And so Miss Smarty Pants being so excited to have a actual body goes and and trys to tell Big Mac how she feels. But when Big Mac sees Miss Smarty Pants he doesn't recognize her and doesn't believe the story that she told him and now thinks that she just some crazy mare running around Sweet Apple Acres. So now Miss Smarty Pants must try to convince Big Mac that her story is true and that she loves him though how she will she does not know.