Wandering at Midnight is the second mission from Metal Slug 3. An unknown alien ship impact with planet Earth. Apparently, this device irradiated join forces, which made ​​scientists, civilians and soldiers were transformed into zombies. When the level begins, the player may find a semi-apocalyptic scenario in which many people need help against the undead horde. People gradually being transformed into a zombie as the virus that causes it is expanding, so the player will have to make way for each other to reach his/her goal, always trying to dodge the bile of infection to avoid being transformed into one. If the player touches the contaminated plasma, he/she immediately transforms into an undead, so the player must find a cure or avoid being touched by the virus again because it will inva