What would you do if for all of your life, you couldn't exist in sunlight? Well, that is what Pitch Black has had to go through. He can't exist in sunlight. But do you know what he does? He enjoys every free moment he has in the night.
An earth pony stallion with no memories found his way to Princess Twilight's doorstep. He's looking for somepony, but he can't remember who. Meanwhile, dark things are coming, and a new evil is reawakening from its slumber.