OCN's "Black Hole" is directed by Kim Bong-joo of "Mobile Phone" and written by Jung Ik-do of "Others Are Hell" and "Save Me". A bio-action suspense story that tells the story of the tragic survival of the people who survived the mutant who inhaled the suspicious black smoke in the sinkhole.　　Kim Ok-bin plays Lee Hwa-sun, a detective from the Seoul Metropolitan Police Agency's Wide-area Search Team, who comes to "Muji" after receiving a call from a murderer who killed her husband and ushers in a turning point in her life. Lee Jun-hyuk plays Yoo Tae-han, a rescue vehicle driver born and raised in Wudi City, who usually seems to be peaceful in the world and jokes, but in fact he has a sense of justice more than anyone else.