Twilight is a Canterlot Orphan. Her parents mysteriously disappeared one day, and were announced dead in the line of duty for the Crown. Growing up as an Orphan has had its benefits, but now the young unicorn receives a surprise she had never expected: Princess Luna, the Immortal Ruler of Equestria, wants Twilight Sparkle as her personal protege. But not just any protege. Luna is grooming Twilight to become the next Valkyrie, an elite Mage who acts as Luna's right hoof. Yet when Twilight discovers a long buried secret during her studies, the new Valkyrie is put to the test to find a way to prevent day from falling across Equestria-- Forever.