This is the first game from "Reclaimer Trilogy" - a new trilogy in the Halo series. The game begins four years after the events of Halo 3. The main character of the series, Master Chief, returns to the game.
Halo 4 is the story of a cybernetic advanced human organism, Super Master Chief. Master Chief works in close connection with the virtual partner - artificial intelligence construct Cortana. Master Chief and Cortana meet with a menacing unknown during the exploration of an ancient civilization on another planet. The player acts as Master Chief, fighting with two main opponents. The first enemy is the remnants of the Covenant, the former military alliance of extraterrestrial races. Another opponent - Prometheans, mechanical warriors of the Forerunner empire.
This new version of the game Halo offers a significant number of weapons, enemy creatures and game modes, missing in previous versions.