Somber Shades, one of Canterlot's brightest and most prestigious unicorns, has lived a life of fortune and prominence. The pride of Celestia's school for gifted unicorns alongside his best friend, Starswirl the Bright, he is known across Equestria for his brilliance, charisma, and strength of will. But when his studies take him to the mysterious Crystal Empire, tragedy upon tragedy befall Somber's life, and slowly breeds corruption into his heart.

Thus chronicles the rise of the king of shadows.