Despite coming from a criminal family, Jung Se Ro (Yoon Kye Sang) is a hardworking student who wants an honest life for himself. That is, until he accidentally gets entangled in one of his father's heists the night of a glamorous jewel exhibition opening. When the dust settles, Se Ro's father is dead and he is falsely accused of killing a man. After being released from prison five years later, Se Ro takes up the life of a con man, joining a ring of jewel smugglers led by Park Kang Jae (Jo Jin Woong). Se Ro is filled with revenge for his father's death and his wasted life until he meets the beautiful jewel heiress, Han Young Won (Han Ji Hye), who has developed a cold heart after the death of her fiancé. The couple brings each other back to life in an ill-fated love, not knowing that Young Won's fiancé was actually the man killed by Se Ro five years earlier.