Long before the first light illuminated our universe, darkness prevailed throughout the cosmos. The light carried with it the spark of life and gave birth to shadow.
For a long time, the shadows were harmless, unable to interact with anything in a tangible way. They were subject to the will of the light, only able to go where the light dictated. Eventually, they started gaining consciousness and personality. They became playful and mischievous, scaring and even entertaining people, but they could never manipulate the things of the physical world.
Mysteriously, the shadows have been getting stronger, bolder. They are now able to manipulate and destroy physical items, moving beyond the confines of their previous ephemeral existence, as if they are evolving. The shadows have become angry, violent and organized, waging war on all light sources, as they seek to plunge the universe into everlasting darkness.