The 9th Circle of Tartarus is not a pleasant place to be. Sombra can attest to that. It's especially worse when you were waited on hand hoof and foot other hoof by crystal ponies for a thousand years. Needless to say, he's mad as hell. Pardon the expression. This is not a ploy for sympathy. Sombra is, for the purposes of this story, an evil bastard who deserves a fate worse than death three times over. Why, you ask? I'll tell you why.

A small amount of magic rested in his horn after he died painfully exploded. With that magic, Sombra posessed Big Macintosh, forced him to murder (among other things) the CMC, and brought their souls down so he could free himself from his prison. His aim is to recruit every horrible monster from inside that place, and take over Equestria.

Celestia won't take this sitting down. She recruits a team: Princesses Luna and Twilight, Captains Spitfire and Shining Armor, and four mercenaries (Rainbow Dash, Applejack, Rarity, and Zecora) to get down there, beat the living [REDACTED] out of him, and bring the fillies back to the living world. This is a generic revenge story does not go as planned, with tragic consequences.

Part One of a Trilogy: The Depths of Tartarus

Inspired by Dante's Inferno, Roguelikes (eg Pokemon Mystery Dungeon), My Little Mages, and features monsters inspired by the SCP Foundation.

Some shipping. Yes, most of it will be F/F.