Grand Theft Auto IV is a brand new adventure in the GTA universe following the experiences of Nikolai "Niko" Bellic, a new immigrant from an undisclosed eastern European country whose troubled pa st and the persuasion of his cousin Roman have brought him to the fictional Liberty City. Unfortunately, Niko’s search for the American Dream and a much needed fresh start, hits an immediate snag when the rags to riches story Roman spun to pique Niko's interest is exposed as not only a complete fabrication, but a ploy to enlist Niko’s well-known skills as a tough guy against the ample list of enemies clamouring for Roman’s debt-ridden blood.

Because Roman is the only person Niko knows in Liberty City he begrudgingly accepts his role as Roman’s protector despite the deception. But as time goes on Niko comes into his own, and his experience on the wrong side of the tracks proves more valuable than he could have ever imagined as he fights for survival and later supremacy on the crime ridden streets of Liberty City.