The lab escape exits have been overrun by zombies, and we're trapped here. This passage ends at the exterior of the lab building, so as long as we can get out, we'll be safe. Let's stay vigilant, there will be zombies around here at any moment. Let's go! Troops will automatically fight when they encounter an enemy. Please select the position to recruit cadet guard. There are too many zombies around. Let's retreat to the exit. The zombie horde sweeps the whole continent. People who can escape from zombie invasions join hands to find a way to survive. Survivors rebuild a living space in ruins and figure on the revival of human civilization.