When all goes wrong during the "Sibling Supreme" battle, Twilight and her friends find themselves trapped under Celestia's Castle, held hostage by someone so close that they know the littlest of secrets. How will the Mane Six survive this ordeal?

Sure I really like Shining Armor's charming personality, but isn't it a bit more interesting when Twilight and the rest of the Mane Six are kept captive by him, accounting for his immense skill in creating new types of mechanics to help further protect the castle. This story takes place in an alternate storyline of Season 9 Episode 4. On the days preceding Episode 4, Shining made a complete room under the castle, and later during Episode 4, a series of events occur that leads to all of the Mane Six and Spike being trapped in the room; but.. There is a catch, cause all of this is just a...

Also, this is my first story, so a lot of holes may exist, please kindly let me know in the feedback.