We find ourselves at the end of the 20th century and the small nation of Outer Heaven threatens the western world with the new weapon called Metal Gear. It is capable of launching nuclear missiles from anywhere. You will have to get into Outer Heaven and rescue your friends Grey Fox. At the same time you will have to get as much information as possible about this super weapon. Collect various items which will be very useful. You will have to face some bosses and try to rescue people they hold hostage.