'Vampire Detective' is about a fictional detective named Yoon San (played by Lee Joon) who suddenly turns into a vampire one day and solves cases of clients with various reasons and uncovers the mystery and secrets of his past. 'Vampire Prosecutor (Season 1, 2)', which caused a huge sensation when it was broadcast in early 2011, is also attracting attention for the new work ('Vampire Detective') presented by Lee Seung-hoon, the PD of CJE&M who planned this drama ('Blood Test') after two years of planning time.