Three years after the events of Operation Intrude N313, the United States Government discovered that a hostile nation might have obtained plans for Metal Gear and were secretly constructing weapons of mass-destruction. Solid Snake, the FOXHOUND operative responsible for the downfall of Outer Heaven, was recruited to lead a three men team consisting of himself and fellow operatives John Turner and Nick Myer, on a mission to infiltrate the enemy base. The codename of the mission was Operation 747.