Blood, red, the opaque liquid flowing between the heart and blood vessels, plays music for life. Human research on blood originates from the pursuit of the origin of life. So, uncovering the secret of blood should reveal a beautiful story, right? If not, what should I do?
A vampire who lives under human skin, in the process of trying to uphold justice, he gradually discovers that his feelings are always on the verge of stirring up, and after every life and death, he finally understands that she is no longer the original her. But when her secret is revealed, can he accept it? Should we get closer or stay away, or give a long-overdue hug?
When her secret was revealed, he saw clearly who he really was...
However, the two hearts that care about each other fall into hesitation after a strange combination of circumstances. How should they choose? Are we supporting each other, or are we looking at each other in the world?
In addition to the main characters, there are also guest appearances by characters from some classic Korean TV series. The guest characters will be explained in the extra series. The cases involved in the stories of this season are not simple cases, they are all connected with the fate of the hero and heroine.