The story shifts back to 1964, the height of the Cold War. Naked Snake heads into Soviet territory to help the scientist Sokolov defect to the West. But due to the betrayal of Snake's mentor and mission advisor The Boss, a female soldier known as "the Mother of Special Forces", Naked Snake fails and heads back into the Soviet Union on a mission to kill The Boss... The third MGS game tells the story of men and women who struggle to remain loyal even while their fates are at the mercy of the ever changing political "scene."