In this thrilling melodrama, the Golden Cross is a group of the top 0.001% richest and most powerful Koreans who control politics and the economy through conspiracies and stratagems. When Kang Do Yun (Kim Kang Woo) gets involved with one of their schemes, his sister ends up losing her life at the hands of one of its leaders. After his father is framed for the murders, Kang Do Yun vows to bring the corrupt group down, becoming a prosecutor seeking revenge. His plan gets complicated, however, when he falls for the daughter (Lee Si Young) of the very man responsible for the death of his family.