Hellbound season 1 featured several concepts and events that audiences will need to remember before the second season of the Netflix original K-drama premieres. With the Hellbound season 1 cast led by Yooh Ah-in, Kim Hyun-joo, and Park Jung-min, the six-episode series became one of the most popular horror K-dramas on the streaming platform. Based on the webtoon of the same name and helmed by Train to Busans Yeon Sang-ho, the show chronicles a dystopian society where creatures appear and condemn people to Hell.