As Halo 5 opens, you’re introduced to two Spartan squads: Blue Team, which is composed of the Master Chief and three surviving Spartan-IIs — Linda, Kelly and Frederic; and Fireteam Osiris, led by former ONI assassin Jameson Locke (if you played last year’s Halo 2 Anniversary, you’ll recognize Locke from the new Blur-produced bookend cutscenes) along with former ODST Edward Buck and new characters Olympia Vale and Holly Tanaka. As Osiris is dispatched on a secret mission to rescue Dr. Halsey, the creator of the Spartan program, Blue Team is assigned to secure a derelict research vessel in danger of being discovered by the Covenant. From there the Chief defies orders and sets off to investigate a mysterious message from a familiar voice, and Locke and Osiris are ordered to ...