It's the month of October, and ponies are mysteriously disappearing across Equestria, leading to considerable fear among it's populace. On the first night of the week preceding Nightmare Night, as a week-long stretch of heavy rainfall begins to fall across Equestria, a life-threatening series of events involving Twilight Sparkle and some of her friends convinces the princess's protege to take up her own personal investigation into the disappearances. Joined by the irrepressible Rainbow Dash, Twilight's investigation will lead her and her pegasus friend outside the town of Ponyville across the rain-soaked land to the wet, cobble-stoned streets of Canterlot. However, Twilight has no idea just how much danger her investigation is about to put herself, her pegasus partner, and eventually the rest of her friends in, as the dark forces responsible for the kidnappings conspire to stop them by any means necessary. And to make matters worse, the events of the week will gradually serve to awaken long-thought dormant emotions in Twilight, dark, bloodthirsty emotions that she's done her best to suppress since that day over a year ago when she nearly lost control of herself in front of her friends. Now she struggles to contain her growing dark side, before it consumes her completely...

A dark adventure mystery delving into matters concerning the supernatural, dark magic, and the occult.