Vincenzo Cassano is an Italian lawyer and Mafia consigliere who moves back to Korea due to a conflict within his organization. He ends up crossing paths with a sharp-tongued lawyer named Cha-young, and the two join forces in using villainous methods to take down villains who cannot be punished by the law.

After ten years, a loyal employee is framed for embezzlement, then murdered by his employers, only to be reborn as their youngest son, with a yearn for revenge guiding his hostile takeover. based on a hit novel.