Once upon a time, there were two adventous brothers, Will and Jacob Grimm, who later became famous storytellers. But before that they traveled to villages, being engaged in collecting folklore and "banishing evil" for money. They would come to the village to convince residents that a witch has settled in their mill, and then - for a fee - they successfully "chased" her. In the next village, it was a troll under the bridge, and so on. But once the glory of the "exorcists" came to the Napoleonic authorities who ordered the brothers to investigate a series of mysterious disappearances of young girls in the forest on the border of France and Germany. This is where our heroes face real scum - an evil sorceress. Will and Jacob have to show all their outstanding abilities, because in case of failure, sorrow detectives will be punished with guillotine.