Halo 3: ODST is a spin-off of the Halo series of futuristic shooters. ###Plot The game is set in the distant future when the humanity is at war with an alien empire, the Covenant. Unlike most Halo games, ODST doesn't feature the series' trademark protagonist Master Chief. In this installment, the main characters are the Orbital Drop Shock Troopers (the titular ODST). They do not possess the Master Chief's superhuman strength and power armor. In the Campaign mode, the main protagonist is...