A few years after The incident in the Congo, involving Big Boss, and the rest of the members of FoxHound, Solid snake started to slowly move into retirement. In order to make some extra money, he hired himself out to do plain, and routine missions for U.S. forces.

Solid Snake was hired to perform a routine mission in Serbia. He was to protect one of the few remaining bridges connecting the enemy North to the allied South. Unexpectedly, he was engaged, and shot down by two jets of unknown origin. He managed to eject, but unfortunately landed on the North side of the river. His only route back to safety is to use the bridge that he was originally protecting. If the enemy were to take advantage of the situation, Snake would be doomed to certain capture.

(Its their best yet, really like the True Lies style bridge scene - schwar)