Three new crooks, Hyena, Bullit and Louie the Plumber, arrive at Empire City and challenge Big Boss to 'The Criminal Games' right after they nab a case full of loot that Berserko and Turbo have stolen from a bank. In order for Big Boss to win the game, he kidnaps Highway and forces Bulletproof and Barricade to help him win the criminal games or else he'll never see his teammate again.