SKY Castle is a dark comedy TV show that revolves around the lives of wealthy families living in Sky Castle, an exclusive neighborhood in South Korea. The story delves into the secrets, scandals, and hidden tragedies that unfold as the characters navigate the pressures of societal expectations, family dynamics, and the intense competition for success. The show tackles various themes such as social commentary, privilege, family pressure, and the dark side of pursuing excellence. It also touches upon issues like betrayal, hidden identity, and the consequences of obsession and greed. With its intriguing plot and sharp satire, SKY Castle is a compelling drama that showcases the complexities of human relationships and the lengths people go to maintain their social status.

Detective Yang Shi-ohn wakes up from a six-year coma. She gets reassigned to the lost and found department, where she discovers that she's gained the supernatural ability to see ghosts connected to the objects left behind there. Along with her new partner, rookie cop Cha Gun-woo who's a hotheaded skeptic, Shi-ohn uses the information to solve cold cases. Gun-woo only believes in tangible things he can see, hear and touch, but he gradually comes to trust Shi-ohn, and together, the bickering partners help the spirits fulfill their dying wishes and unfinished business before passing on to the afterlife.