One morning, in the city of Manehattan, a small bat filly turns up at the office of Pvt. Detective, SilverBullet's door. Her shyness, with her inability to speak, comes with a job for the grey coated stallion… A delivery job. A delivery job to the Canterlot Castle for Princess Luna's eyes only. But something is dark and sour about it and when something happens, he pulls all his resources to find the culprits… or die trying to clear his name.