You are a young medical student working at a hospital in Sunlight City - a perfect city - created under the Utopia Development Project. One day, while you are in the university hospital basement doing some research, an earthquake strikes. The whole city is suddenly covered in dark clouds and an eerie silence. Everybody is killed! Well, thats how things appear. But when you venture out of the hospital, you discover that the city is swarming with dead people - the living dead. You and your friend Suzie soon discover that there are still survivors in the town. You must take the ambulance and rescue the people stranded in the city. Any survivors attacked by these zombies will be infected by the same virus, and rise again. With each survivor you return to the hospital, you will be able to upgrade your ambulance, your armour and the hospital. Saving military personnel and police officers will increase the morale in the hospital. Collecting engineers and mechanics will enable upgrades, so if you try to find the right kind of people to power up your status, the better your chances of conquering the game.