Gyeongseong, a city of brilliant desires.
The door of the Gyeongseong Detective Agency at No. 45 Myeongchi-jeong was opened. Blood-and-blood orphans, A sixteen-year-old girl with only her spirits, she is caught in a secret trap.
“No, I don’t! I don’t know anything, really!” Jung Hae-kyung, a young man who runs a detective agency alone.
A chance encounter with a girl brings back memories of the past that he wants to forget, and the Coast Guard moves to save the framed So-hwa.
“If I tell you my name, will you search all the castles to find me?”