Jiang Lu, a young lawyer full of ideals, and his partners have experienced twists and turns in the streets of the city, inside and outside the court, from bizarre small cases to serious social cases, gradually uncovering the double test of law and human nature. The four volumes connect the growth of the legal profession, the humor and conflicts between friends, the struggle against power and darkness, and the pursuit of social justice. The story connects exciting cases in a relaxed and humorous style. The main line runs through Jiang Lu's growth and the evolution of his belief in justice. In the end, under a super major case involving national justice, everyone achieved self-salvation and completed the legal person's persistence in justice.