A high school becomes ground zero for a zombie virus outbreak. Trapped students must fight their way out — or turn into one of the rabid infected.

Hundreds of cash-strapped players accept a strange invitation to compete in children’s games—with high stakes. But, a tempting prize awaits the victor.

Hwa-young is an 18-year-old student living alone. Her friends call her “mom” and use her house as their place to hang out, but don’t really include her in their clique….