When the world is hit with a naturally occurring virus that spreads among all living things, humans begin to turn into insatiable zombies. The only hope for the survivors to receive food and other necessities are the Riders.

When the world is hit with a naturally occurring virus that spreads among all living things, humans begin to turn into insatiable zombies. In a blink, the world as we know it collapses. Furthermore, the few remaining survivors are unable to use the available food resources. They therefore develop a new crop to support themselves. Survivors depend on one profession, their only hope; someone in this profession must brave the dangers to send and receive food and packages of necessities. These people are called Riders.