Being an intern at One Wizard sounds magical on the page, but in practice mostly means getting yelled at by senior mages and angry clients alike. And so, after receiving a frantic call from a young man who's awoken to a talisman on his bedroom wall - and no memory of how it got there - Journeyman Wen jumps at the chance to escape call-center duty and actually help someone for once.But the case ends up being more complicated than Wen could ever have anticipated. The client has been possessed by a demon prince from Hell, and he's not interested in leaving.