Celestia and Luna, sisters of the Sun and the Moon. Their bond is one that exemplifies what it means to love your family. Through the times of joy to the times of suffering, their love for one another always sees them through. Ever since they were young fillies, they have always been by each other's side. Celestia has always been there, to guide and to comfort her younger sister. But times will come that will test the bonds of the sisters more than anything else. Soon, they shall face their greatest challenge ever.