Something has gone wrong. Instead of being defeated by Twilight and her friends, Tirek turned the tables and took over Equestria. Ten years later, Zecora performed an ancient ritual to summon the only creature with any hope of stopping him: A faceless woman with green skin who didn't remember her name.
You play as that woman. Currently, you're on the outskirts of his zone of control, raiding an entrance to Tartarus. Tirek's new regieme of Royal Guards has a presence there, but, with judicious use of your wits, you've managed to kill about half of them. You've learned that the Princesses are being kept there, and it doesn't exactly sound like Tirek is treating his prisoners well.
Right now you're listening to two guards debating the merits of their job. Both don't particularly seem to like it very much. Can you trust your ability to manipulate their doubts into resistance?