He Ming, a senior Chinese judge, was silenced for trying the "Blue Dragon Society" gang-related case and was reborn as the son of a low-level immigrant in South Korea. With the judicial memories and unsolved mysteries of his previous life, he was admitted to the Seoul Central Prosecutor's Office as the youngest prosecutor in history, only to discover that his father's "suicide case" twenty years ago was fatally related to the transnational money laundering case being pursued in this life.