In 1979, Kitae is enjoying his power as deputy director of the KCIA when an unexpected event occurs. Source: TheTVDB

Kitae has an unexpected encounter with Kihyun, and Yejin, now a prosecutor, joins the investigation. Source: TheTVDB

Geonyoung returns and begins closing in, putting Kitae in a desperate position. Source: TheTVDB

Kitae sets a dangerous plan in motion as part of his relentless pursuit of power. Source: TheTVDB

As Geonyoung closes in, the conflict between Kitae and Kihyun continues to escalate. Source: TheTVDB

Kitae and Geonyoung each set their final plans in motion.