Starring Pablo Schreiber Shabana Azmi Natasha Culzac Olive Gray Yerin Ha Bentley Kalu Kate Kennedy Charlie Murphy Danny Sapani Jen Taylor Bokeem Woodbine Natascha McElhone Joseph Morgan Christina Bennington Fiona O'Shaughnessy Cristina Rodlo Viktor Åkerblom Tylan Bailey Harry Lloyd No. overall No. in season Title Directed by Written by Original release date 10 1 "Sanctuary" Debs Paterson David Wiener February 8, 2024 Following the raid on Raas Kkhotskha, John and Cortana are surgically separated. Six months later, Silver Team is sent on a mission to evacuate residents of the planet Sanctuary from the Covenant, who resist until the Covenant begin glassing the planet. After John rescues Corporal Talia Perez from a squad of Elites, Silver Team narrowly escapes the planet. On Reach, Silver Team meets ONI operative James Ackerson, Halsey's replacement in overseeing the SPARTAN-II program. Ackerson questions John about his experience on Sanctuary, expressing interest in Halsey's prior experiments on him and concern over lingering side effects from having Cortana implanted in his brain. After Ackerson seemingly dismisses John's concerns of the Covenant's changing strategies, John secretly meets with Parangosky, who states she was discharged from ONI after taking the fall from Halsey's scandals. Meanwhile, Soren takes interest in an indentured servant who claims to have seen Halsey. Ignoring the concerns of his wife, Laera, Soren purchases the servant's services in hope of capturing Halsey, but is instead led into a trap and arrested for piracy and treason. Having survived Madrigal's destruction by the Covenant, Kwan Ha befriends Soren's son, Kessler, and tells him stories about a monster. 11 2 "Sword" Debs Paterson Ahmadu Garba February 8, 2024 On the Rubble, Kwan escapes the grasp of several slavers. Laera berates Soren's crew for leaving him behind and vows to find him. On Reach, as Cobalt Team, another Spartan fireteam, is sent on a mission in Silver Team's stead due to Ackerson's reluctance to trust the latter, John tells Kai that he saw Makee on Sanctuary and pushes Silver Team to train harder; this puts strain on Riz, who is recovering from injuries suffered on Raas Kkhotskha. Ackerson reveals to John that Perez did not corroborate his testimony of what happened on Sanctuary; John confronts Perez, who expresses survivor guilt and admits to not telling Ackerson the full truth. Ackerson, who is holding Halsey captive in a simulated room, uses Cortana to help deduce an impending threat. After Cobalt Team fails to return from their mission, John deduces that they were sent to Visegrád Relay, a communications tower on Reach. Convinced that the Covenant is on the planet, John gathers Silver Team and heads to Visegrád. Meanwhile, at SWORD Base, Arbiter Var 'Gatanai, accompanied by Makee, takes out a squad of UNSC marines and recovers the larger Forerunner keystone. 12 3 "Visegrad" Craig Zisk Marisha Mukerjee February 15, 2024 At Visegrád Relay, Silver Team is detained by ONI operatives, despite John's insistence of Covenant activity. Admiral Jacob Keyes informs Silver Team that they are suspended from combat and that John is to undergo psychiatric evaluation. John escapes and meets with Parangosky, who warns him not to go against ONI. Realizing that Parangosky never left ONI, John departs to find Perez. Meanwhile, Kwan protects Laera and Kessler from Soren's mutinous crew, killing the latter when they threaten Laera, though Kessler is separated from them. Ackerson shows Keyes the bodies of Cobalt Team, who were killed by the Covenant on Reach. Furious at Ackerson and ONI for their cover-up, Keyes enacts the "Winter Contingency" of evacuating and defending Reach, against Ackerson's plan to transport "essential assets" away without informing the public of the planet's doom. Ackerson bids farewell to Halsey, who reveals that his sister, Julia, was a Spartan-II candidate but died during the augmentation process. Ackerson leaves Halsey with Soren, then helps his elderly father commit suicide to avoid capture before boarding a spacecraft. John finds Perez, who explains she has translated a message from Var 'Gatanai that announces the Covenant's intention to destroy Reach, before explosions rock the planet. 13 4 "Reach" Craig Zisk Tom Hemmings February 22, 2024 The Covenant's invasion of Reach begins; John and Perez witness her family being killed by plasma bombardment. Halsey and Soren are freed from their cell when security for the ONI detention level deactivates. They find Cortana's containment room and witness Makee capturing the AI's data crystal. On their way to FLEETCOM HQ, John and Perez run into Riz, Louis and his spouse Danilo. Danilo is killed in the fighting and Louis sacrifices himself to destroy a Covenant Wraith attacking the group. The remaining survivors manage to reach FLEETCOM HQ, where Vannak reveals their Mjolnir armor was taken during Ackerson's evacuation and Kai is missing. Keyes informs John of High Command's intention to abandon Reach and the truth behind Cobalt Team's status at Visegrád Relay. Keyes leads Halsey and Soren to an evac shuttle, where Perez is helping civilians board. The hangar comes under attack, forcing Keyes to sacrifice himself to allow the shuttle to escape. Silver Team is ambushed by Covenant forces, led by Var 'Gatanai; John is wounded in the ensuing battle but is spared by Makee, who orders Var to not kill him. Vannak attempts to kill Var, but is impaled and killed by a Needler shard. 14 5 "Aleria" Otto Bathurst Basil Lee Kreimendahl February 29, 2024 As Silver Team is cornered by a Brute Chieftain, Kwan and Laera arrive to rescue them, though Riz is severely wounded after she recovers Vannak's body. John witnesses Reach being glassed by the Covenant before falling unconscious. While unconscious, John remembers that Cortana agreed to do something for Parangosky in exchange for saving his life. Makee, now disillusioned with the Prophets, attempts to enlist Cortana and Var 'Gatanai to go rogue and find Halo themselves. While Cortana initially refuses, she secretly shows Var John's memory of his vision of Halo, convincing Var to change his mind. On Aleria, Halsey operates on Riz, but having suffered significant damage, Riz decides to stay behind and find a normal life. Soren and Laera seek out Kessler, only to discover that he was taken by the UNSC. After some initial disagreement between Kwan and John, a crematory funeral for Vannak is held. John swears to hunt down Parangosky and Ackerson, ignoring Halsey's request for him to focus on finding Halo instead. Kwan has a vision of the Sanctuary shaman, who ominously warns her that "the monster" is coming closer. On Onyx, Kai meets with Ackerson and prepares to lead a unit of Spartan-IIIs. 15 6 "Onyx" Otto Bathurst Sarah McCarron March 7, 2024 John, Halsey, Soren, Laera, and Kwan land near ONI's secret headquarters on Onyx. John serves as a distraction, taking on ONI forces and willingly being captured before fighting through in an attempt to confront Parangosky; this allows Soren and Laera to search for Kessler at the ONI training facility. Kwan and Halsey enter a Forerunner cavern; at the end of the cavern, they run into science personnel led by Miranda Keyes. Meanwhile, Perez, now a trainee in the SPARTAN-III program, argues with Kai over their training simulation. Kai questions Ackerson about this, and he reveals the partial truth about Reach to her, but tells her John is working for the Covenant. Kai confronts John, who reveals their teammates' fates and ONI's attempts to sabotage them. Though John allows Kai to beat him up on Ackerson's orders, he reasons with her to reconsider ONI's narrative and go against Ackerson. Cortana contacts Parangosky and provides data on her location, and secretly leads John to the keystone still in UNSC hands. A Covenant priest, named Uto 'Mdama, detects Cortana's transmission and orders Var to execute Makee, but he and his loyalists slaughter 'Mdama's assembly instead, protecting Makee as she reaches for their captured keystone. 16 7 "Thermopylae" Dennie Gordon Ahmadu Garba March 14, 2024 In a shared vision of Halo, John and Makee discuss their different beliefs. After being pulled away from the vision, Makee defeats Uto 'Mdama with the assistance of Cortana and determines Halo's coordinates using the stars present in the vision, while Kai helps John subdue the soldiers sent after him. Halsey, Miranda, and Kwan investigate the ancient ruins on Onyx, which Halsey believes were built by those who built Halo. Kwan unlocks a doorway into an ancient laboratory, where they discover the remains of a Forerunner scientist and a city before the three are forced to leave with a device containing the scientist's research; this helps Kwan realize that the monster in her visions is real. Soren locates Kessler but loses sight of him and Laera in a chaotic fistfight. Ackerson discovers that the true intent of the Spartan-III training simulation is to cause a nuclear reaction capable of destroying an entire star system and even Halo itself. He warns John and Kai about this; Kai decides to go with the Spartan-IIIs while John goes alone. Donning his armor, John reclaims Silver Team's Condor and travels to Halo's location, where the UNSC and the Covenant are engaged in combat. 17 8 "Halo" Dennie Gordon David Wiener March 21, 2024 An overeager biologist inadvertently releases spores from the canister recovered by Halsey and Miranda, which quickly transform the base's personnel into zombie-like creatures. Parangosky and Halsey fall victim to it; Miranda freezes her mother in stasis to stop the infection from developing further, and promises that she will bring her back. Soren and Kwan rescue Laera, Kessler and, reluctantly, Ackerson after he saves Laera and Kessler, but Laera stays behind after becoming infected. As the group escapes, the shaman appears to Kwan and reveals the true nature of the monster in her visions as the parasitic Flood. John helps Kai and the Spartan-IIIs capture a Covenant Corvette, before boarding Makee's ship and rescuing Cortana just before it crashes on Halo. Kai destroys a Covenant Assault Carrier in a suicide run with the captured Corvette, allowing the UNSC to gain the upper hand. On Halo, John engages Var 'Gatanai in a sword duel, ultimately killing him. Makee reveals her intention to bring "peace" to the galaxy by using Halo to sterilize it, before entering a Forerunner structure. Later, John is interrogated by a Forerunner Monitor,[a] who warns him that "it" is waiting for John deeper in the ring.