A serial murder case surrounding a wealthy group. Except for the black butterfly pattern left at the scene, there are no clues.
Underworld, chaebols, entertainment industry, desire and sin mixed. In the dark corner of the charming eyes, there is always a pair of black wings ready to move.
The heroine, a woman whose family was ruined due to gangland murders when she was young;
The male protagonist is a young man from a group who was psychologically affected by a murder scene on a rainy night ten years ago;
A genius police detective who was once all-powerful in the past appeared ten years later as a gold medal agent of China Entertainment Company...
