Ha Ji-won (Hospital Ship) is set to make a comeback via the big-budgeted political spy drama Prometheus.
She will take on the role of Chae Eun-seo, a National Intelligence Service officer who goes on an undercover mission for the denuclarization of North Korea.
Meanwhile, Joo Ji-hoon (Kingdom) has turned down the offer to play the male lead role of a North Korean defector agent.
Prometheus will revolve around the story of North Korean scientists working overseas, who mysteriously disappeared while heading back to the North. It is likely to air at the end of the year on KBS2.