Xu Yizhou, a young man from a small town with an average family background, determined to become a lawyer in order to clear the backlog of cases in which his father was wrongly accused many years ago. While working as an assistant at a top law firm in the city, he was involved in a bizarre murder case. After that, a series of complicated cases followed: business wars, family ethics, sexual harassment in the workplace, financial fraud... Each case not only presented legal offense and defense, but also witnessed the complexity and tenderness of human nature. Together with his master Mei Zhu, his cold rival Lin Xueyao, and his ghostly brother Sun Dahai, he experienced climactic court debates, misunderstandings in life, black humor, growth and transformation, until he revealed the inside story of his father's unjust case. In the end, Xu Yizhou walked out of his own legal path between reality and idealism, justice and gray areas, completed the double redemption of himself and his family, and also interpreted the warmth of the law in countless "jokes".