One is a popular novelist, and the other is a famous iron-blooded detective. Two unrelated people, because of a serial murder case, they got to know each other and entered each other's world.
The two cooperated seamlessly and brought criminals to justice time and time again. But behind the seemingly reasonable truth of the case, they found themselves mired in a mystery.
Is the encounter between the two an arrangement of fate, or is there someone manipulating everything under the guise of fate?