Cold Hart and Refractionary Blaze were sisters and heirs to a kingdom that was originally off the map. As children, they would play together all the time. When Refractionary Blaze, the younger, Rainbow-Eyed ditz and heir to the throne goes missing, Cold Hart has to take up the crown and lead her kingdom. Trusting in her sister’s eventual return to their kingdom, she leads the court for 5 years. However, when Cold Hart suddenly gains mysterious powers that aren’t her own and her Cutie Mark changes from hers to her sister’s, she knows that something is wrong. Secretly ditching her duties as princess, she gains traction, hot on the trail of Blaze’s disappearance, leading all the way to a suspicious looking house in Ponyville. However, talking to everyone she finds out that no pony remembers the pony that lived there at all. Through hidden sisters, old lovers, conflicting memories, and erased thoughts, Cold will have to fight for what she believes in. But will even all that be enough?