With an obscure evil on the horizon, the princesses must act fast. Twilight obviously thinks she's the best choice, but Celestia chooses to send Discord instead! Twilight must prove her worth, so she turns her attention to the chest from the Tree of Harmony.

In order to open it, she needs six keys. All of her friends have found mysterious, shiny objects, but she has yet to find one of her own. Thus begins her quest.

This might also need a Comedy tag.