Xu Zhenyu (played by Yu Seung-ho) suffers from memory excess syndrome. Although he is a memory genius in the eyes of others, he is diagnosed as "disabled" by doctors because he has the ability to remember all kinds of memories, whether joy, sadness or pain, hundreds of times deeper than ordinary people. When he overcame his own obstacles with optimism and began to be invincible as a lawyer, life once again threw him a questionnaire of cruel fate. Vow to save his father who was sentenced to death because of the conspiracy of the upper echelons of society, Zhenyu's father was accused of wrongful crimes and was accused of being the suspect of the national case "Xicun Female College Student Murder Case" and sentenced to death. He became a lawyer to prove his father's innocence and vowed to rescue his father before all the evidence disappeared.