The drama is set in Seoul in 1987 and tells the story of a deep love story between a prestigious university student named Soo-ho (played by Jung Hae-in) who suddenly breaks into a female dormitory covered in blood one day and a female university student named Young-cho (played by Kim Ji-soo) who hides him and treats him in the midst of thrilling surveillance and crisis. The drama is scheduled to be broadcast in December 2021 as the director and screenwriter of "Sky Castle" collaborate again.