At first, both Twilight and Pinkie think they're being sent on a regular friendship mission from the Cutie Map. However, as they find out more about the peculiar village of Mystare, what was first thought to be an inheritance problem quickly turns into a murder case.
Being the only two ponies who can solve this case, Twilight and Pinkie must use their brains and wits to figure out the culprit of this unfortunate crime. But in a place hostile to visitors, even that of a princess, are they truly safe or will the murderer target them next?