Kazuma and Aqua visit a magic shop run by a kind-hearted lich named Wiz, who reveals herself to be one of the Devil King's generals in charge of protecting a barrier surrounding the Devil King's castle. After Wiz teaches Kazuma the Drain Touch skill, the party takes on a request to exorcise evil spirits from a mansion, where they can stay during the winter. Later that night, Kazuma and Megumin find themselves on the run from an army of possessed dolls while also desperately needing the bathroom. The following morning, Aqua reveals that her actions after first meeting Wiz led to the mansion being haunted in the first place.