XBOX360 software METAL GEAR Solid 5 Ground Zeros

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

The prologue to the main story "phantom pain" is a story of the pain and loss of a man who turned the world into an enemy.
The next generation 『 METAL GEAR Solid 』 has finally arrived based on the concept of "diving" with a high degree of freedom to depict realistic images and world views with "photorealistic" images.
In 1975, a few months after the 『 METAL GEAR Solid Peace Walker 』, Snake sneaks into a U.S. military base on the southern tip of the country.
It's an unprecedented "free" and "real" diving mission in which you figure out all the ways from diving to escape.
What did Snake see there when he was on his way to rescue Chico, a boy who was captured at a U.S. military base?