Two teachers hold polar opposite viewpoints about teaching and life. Wang Qiang Da is a mathematics teacher who approaches everything in front of him with logic and reasoning. Wang Qiang Wei is a history teacher at the same tutoring center who cares about the love of learning and making people happy around her. When Qiang Da and Qiang Wei are brought together by a crime, they must work together to get to the bottom of what happened. What will they discover about themselves in the process?