Immune : Run or Die

In May 2018, a virus spreads in Korea and then worldwide, decimating half of the global population and turning them into brain-eating zombies. The Korean government tries to maintain balance in its country. It is announced that a vaccine might be possible, but it would require sacrificing a few lives who possess the necessary immunity. A manhunt is ordered by the government to capture these individuals. The group Seventeen, who were preparing for their debut in Japan, find themselves in turmoil. What if one or more members possess the sought-after immunity for the vaccine? Should they flee or sacrifice themselves? Is it really possible to save the little humanity left in this world?