Two teachers hold polar opposite viewpoints about teaching and life. Wang Qiang-Da is a genius Professor of Mathematics who approaches everything in front of him with logic and reasoning. Wang Qiang-Wei is a history teacher, art appraiser and “Dorothy” on “Sophie’s Midnight Sky” radio program. She cares about the love of learning and making people happy around her. Qiang-Da and Qiang-Wei are brought together during a crime bust for the “Black Ghost” which goes wrong. Both end up teaching at Chang Tai Tutorial Classes and helping Prosecutor Tie Bu-Fan solve cases.