From the back of the box:
The Saga Begins Here
Metal Gear Solid - You are Snake, a highly trained government agent on a mission to regain control of a secret nuclear weapons base from terrorist hands and prevent a disaster that could change the face of the world.
Metal Gear Solid 2 - Armed with an arsenal of new weapons, supplies and stealth maneuvers, it's up to Solid Snake to infiltrate the enemy and keep a weapon of mass destruction from falling into the wrong hands!
Metal Gear Solid 3 - Deep in the jungle, an elite soldier must combine stealth with survival to infiltrate the enemy and stop them from triggering the largest full scale war the world has ever seen.