The game opens moments after the cliffhanger ending of Modern Warfare 2 with the U.S. struggling to stave off a surprise Russian attack. The single-player campaign will ping-pong players around the world as they take on the multiple throwaway roles as a Russian Federal Protective Services agent, SAS Operative, tank gunner, and AC-130 gunner as well as key characters from previous installments and new recurring characters. The game will feature about 15 missions, kicking off with the invasion of Manhattan by a Russian force and wrapping up with a final encounter in Dubai.
The single-player campaign, which appears to wrap up most of the unanswered questions and character fates of the first two Modern Warfare titles, also introduces new characters who appear to be destined for future Modern Warfare games, especially two Delta Force operatives codenamed “Frost” and “Sandman”.