Alicia has partial immunity from the zombie contagion. Before the world falled appart she was in the BIO LAB with her mom, acidentaly catching the virus but not all the way. First year of the virus Alicia spended in hidin, she could think but not speak.

At some point she rebounds from the virus, like a person overcoming a serious flu, and returns to something resembling normalcy. Unfortinetly for her, reversal happened when she was walking among a horde of zombies, and suddenly they look at her not as one of their own kind — but as food.

Mangled body parts have been turning up all over Seoul and the inhabitants are scared. Ten murders in ten weeks, all committed with a pocket knife, and still, nobody has a clue who the creepy killer is.

Kim Jong-in is a handsome and charming detective with a fondness for blood. He doesn't know it yet, but he's is the only one who can stop the wild killer.

When her brother, Park Chanyeol, is kidnapped, just graduated High School student Ha Na Yeong finds herself thrown into the center of the investigation. Her only clue is a bloody record she found in her brother's shattered apartment.

She enlists the help of Kim Jong-in.

Can Ha Na Yeong help Kim Jong- In overcome his blood addiction and find the answers before the arrogant killer and his deadly knife strike again?