Twilight's relaxation time in the Canterlot archives just after Day Court is inturrupted by the megalomaniacal monster of the week.

Obviously, Twilight is having none of that.

Thousands of years ago before Discord's imprisonment, a dark mage of unknown origins was brought into the fold of Equestrians growing government. Now, Princess Luna calls for the aid of Princess Cadence in hope to return the mage to the side of harmony.

Problem is... He's kind of a jackass

Twilight, inquisitive has ever, has gone to Luna with a question about her senses...

That is likely to be a mistake.