The disappearance of Managing Director Song becomes the subject of a police investigation, putting Jae-seong in a difficult position. Yong-ho realises that Jae-seong intends to sabotage the port project for Taeha's benefit, his father-in-law's company. Yong-ho sides with Jae-gyeong and shares everything he knows, deepening the twins' mistrust of one another.