It has been a few years since Twilight has gained royalty. Twilight Sparkle then gets a responsibility of getting a student, because why not? A princess' responsibility is by far the biggest, and one of them is by giving wisdom and knowledge. Meanwhile, her student is quite... Unique. Having to have pyrokinesis at birth, Floating Scarlet yearns to be one of the best, taking the opportunity to become Twilight's first student.
Then, another form of darknees appears, which lays isolated under the castle of Canterlot.

Will Scarlet be able to get Twilight to see the good in her and become a leader?
Will Twilight be able to succeed through her responsibility, lead Scarlet to the right direction, and take away the evil from under?