The vampire drama "Bloodline" is co-created by Guillermo del Toro, Carlton Cuse and Chuck Hogan. The drama is adapted from the vampire novel trilogy of the same name. The fourth season tells the story of nine months later, the nuclear winter caused by the explosion of a nuclear bomb obscured the sun, causing the world to fall into a long period of darkness and be controlled by the blood race without restrictions on their activities, and the blood ancestor established a totalitarian regime. Under this regime, the blood ancestor and its men formed an unreliable relationship with the frightened people. Humans now have to work for the blood race. If they do not cooperate, death awaits them.