Welcome to Zone 10-103, which is highly classified and deep underground. A level four emergency has been declared there. This means that the experimental undead got out of control and roam the floors, devouring those who tested them. You will help a special operator who is sent with a detachment to eliminate the rebellious zombies. The hero must move through the floors using the elevator and constantly keep in touch with the operator Morpho by radio. They will tell you on which floor the monsters appeared and warn them approaching so that the hero can react to the enemy in time and shoot back.