Halo Legends presents seven distinct stories set in the Halo universe, each created by a different production studio. "The Babysitter" follows the Helljumpers, elite Orbital Drop Shock Troopers on a secret assassination mission behind enemy lines. "The Duel" tells the story of an ancient Arbiter who abandoned the Covenant faith and now faces the consequences of being labeled a heretic. "The Package" focuses on a Spartan unit, including the Master Chief, as they undertake a covert operation to board a Covenant flagship and retrieve a vital item. In "Origins," the Master Chief and Cortana are stranded after Halo 3, and Cortana recounts the Forerunners' fall, the Flood's destruction, humanity's rise, and the subsequent war between humans and the Covenant. "Homecoming" explores Spartan Daisy's reflections on her SPARTAN-II background as she helps evacuate UNSC troops caught in a Covenant ambush. "Prototype" follows Marine Sergeant Ghost as he fights fiercely to atone for his past mistakes. Finally, "Odd One Out" is a non-canonical parody featuring Spartan 1337, who endures a series of unfortunate events.
