You, Dex, Jae & Lim, got transferred to Jeju in order to train. A military service, even though y'all are still teenagers, since the government knew the skills you have. But when you guys are having fun at the mall, the zombies devoured.

After a couple of things happened. Vicious Squad are being trapped inside of the arcade in the mall with some students, men, women and employees in that arcade. All of them are trapped, zombies are outside.

The President... The government... Will they send a rescue for your squad? They can't lose you.. You guys are the weapons they have..