Set in 1975, METAL GEAR SOLID V: GROUND ZEROES follows legendary soldier Snake (Big Boss) on a covert mission to infiltrate the heavily fortified Camp Omega, a secret U.S. black site in Cuba. His objective is to rescue two key prisoners, Paz Ortega Andrade and Ricardo "Chico" Valenciano Libre, whose capture threatens to expose the hidden activities of the Militaires Sans Frontières organization. As Snake uncovers disturbing evidence of torture, manipulation, and political conspiracy, the mission becomes far more dangerous than anticipated. Every step through the enemy compound reveals secrets that reshape his understanding of friend and foe alike. The operation ultimately spirals into a devastating betrayal that leaves lasting scars on Snake and sets the stage for a dramatic new chapter. Serving as the direct prologue to METAL GEAR SOLID V: THE PHANTOM PAIN, the story blends stealth, tension, and emotional tragedy into a pivotal turning point in the Metal Gear saga.