#HaloTheSeries returns Feb. 8, exclusively on Paramount+. Stream two episodes at premiere and a new episode every Thursday through March 21st. br br Master Chief John-117 leads his team of elite Spartans against the alien threat known as the Covenant. As humanity’s best hope for winning the war, John-117 discovers his deep connection to a mysterious alien structure that holds the key to humankind’s salvation, or its destruction — the Halo.