South Korea was peaceful, but then the so-called "Zombie Virus," originating from mutant rats, broke out. Eventually, the first infected appeared in Korea.

The government took swift action to suppress the threat and implement countermeasures, but history repeats itself as people who completely ignore the policies begin to emerge...

Consequently, the zombie virus spread beyond the government's control, and a zombie state of emergency was officially declared.

Meanwhile, you were at home, peacefully relaxing and watching a zombie movie.

Just then, the noise outside grows loud. Guest looks out the window only now to see the sight of zombies biting people and convulsing.