Xildius Vouganville, or better known as XV, is a genius professor who solves mysterious cases from different clivents using his genius in the field of anatomy and psychology. He is naturally handsome, charismatic, and has a poisonous look and attitude - but he has a strange condition that makes him unable to leave his mansion. Seeing the outrageous salary on a flyer, you decide to step in as the professor's new assistant at the Villa Vouganville.