Guo Xiaoming, an undercover agent who has been lurking in the vampire empire for three full years, lives a life of fear. During the day, he had to deal with his immediate boss who could suck him dry at any time, and at night he had to secretly pass information to the Human Alliance. Until one day, he drew a cheat called the "King Card Drawing System" online - as long as he completed the task, he could draw various vampire ability cards!
