1881 AD, the Joseon Dynasty faces a turbulent period in its internal and external policies. It's right when a mysterious murder occurs. Youngik, the adopted son of Queen Min, orders Chaeyul to investigate it. It appears that the murder has way more connections to other unresolved murders that no one knew about.. On top of everything, the government seems to be corrupt and incompetent. Suddenly, the evil spirits called Specters, long held underground, are set loose by an evil scheme... And the whole dynasty gets drained in fierce battles and intrigues. Who is on the good and who on the bad side?!