It is about a top field agent in the National Intelligence Service (NIS). After going missing a year ago, he returns to the organization to find an internal traitor who drops him into the abyss.
Black Sun is an upcoming South Korean television series starring Namkoong Min, Park Ha-sun and Kim Ji-eun. It won the 2018 MBC Drama Screenplay Contest by Park Seok-ho. It is scheduled to premiere on MBC TV in the second half of 2021.