There is a secret held in the dungeons below Canterlot, deeper than the crystal caverns into the roots of the mountain. This secret is a creature imprisoned by the Princesses. It is a source of great knowledge, but may ultimately be a great enemy.
Just another Sweetie x Mash love story. Only things don't get hitched off right away. This story tells of how they grew onto one another and how Sweetie Belle was introduced into the world of video games because of Button Mash.