In 1931 New York City, several Chronicoms steal the faces of three police officers and kill a contact from a local speakeasy. S.H.I.E.L.D. agent Jemma Simmons introduces Director Alphonso "Mack" Mackenzie and agent Daisy Johnson to an Life Model Decoy (LMD) version of Phil Coulson, who struggles with his existence and the amount of information uploaded into him. Daisy and Deke Shaw investigate the faceless officers and are attacked by the Chronicoms, but they overpower one and take him back to t
Deke and Mack promise to keep Freddy safe, traveling with him by train to make a delivery. The other agents regroup at Koenig's speakeasy and interrogate Freddy's contact, Viola; learning she is a Hydra agent and that Freddy is carrying what will become Hydra's super soldier serum. They return to the Zephyr, where Enoch attempts to prevent an erratic May from leaving the ship. Coulson stops her, but she reacts apathetically to his presence. Koenig helps direct the team to Freddy's delivery locat
The agents end up in 1955 near Area 51, a S.H.I.E.L.D. base currently working on Project Helius, an ion fusion reactor prototype. The agents kidnap high ranking agent Gerald Sharpe and have Coulson impersonate him while Simmons impersonates Peggy Carter so they can find the Chronicom infiltrators. However, they run into Carter's former partner Daniel Sousa, who outs them. Despite putting up resistance and his racism towards part of the team, Sharpe eventually reveals that Helius cannot function
Coulson wakes up in Sousa's custody with a system glitch that makes him see in black and white and hear an internal monologue (in the style of a film noir). He realizes that the current date is the day Sousa dies while delivering a device to Howard Stark. Coulson calls the Zephyr with the help of Enoch at the speakeasy. Elena "Yo-Yo" Rodriguez and Deke find the device, but the latter is captured by Hydra. He is taken to an older Wilfred Malick, who spares Deke's life since Deke spared his in 193
In 1973, the agents return to the speakeasy to discover that S.H.I.E.L.D. is preparing Project Insight, which should not be developed for several more decades, led by Wilfred Malick, who should have died in 1970. Wilfred and the Chronicoms attempt to capture the agents, but Daisy briefly takes his son Nathaniel (who also should be dead) hostage to allow their escape. Nathaniel sees Daisy use her powers. The agents reunite with Enoch and return to the Zephyr. Without warning, the Chronicoms jump
The Lighthouse automatically fires missiles at the Zephyr, damaging the time drive. While Deke, Simmons, and Enoch repair it, Deke discovers that Simmons has a memory implant that blocks her knowledge of Leo Fitz's location while retaining information on time travel. Nathaniel experiments on Daisy and transfers her powers to himself, but he is overwhelmed by them as they destroy the building he is in, allowing Sousa to get Daisy back to the Zephyr. May uses her powers to identify undercover Chro
Stuck in 1982, a despondent Mack spends the next year alone in grief. Deke checks in on Mack occasionally, and eventually convinces him to come see Deke's new band, The Deke Squad, which include Olga Pachinko, Roxy Glass, Cricket and twins Ronnie and Tommy Chang, which performs 80s' classics that have not been written yet. Deke reveals that he has secretly been training the members of the band to be S.H.I.E.L.D. agents, and that Coulson's consciousness has been saved on a hard drive. Meanwhile,
After rescuing Mack, Deke, and Coulson, Simmons informs the team that the time drive keeps jumping them forward by less time until it will eventually collapse on them. Needing Yo-Yo's currently inactive powers to deactivate it, Daisy suggests stopping by Afterlife to get help from her mother Jiaying. Yo-Yo and May arrive to discover that Jiaying is in the process of helping a despondent Inhuman named Kora with her volatile energy powers. After examining Yo-Yo, Jiaying comes to the conclusion tha
The Zephyr gets trapped in a time vortex as Daisy wakes up from her cryo-chamber. After witnessing several events happen, time suddenly restarts and she realizes that she is trapped in a time loop as the Zephyr gets closer to the center of the vortex with every passing loop. She learns that Coulson is also aware and has been in the loop longer, though Daisy forgets everything when she dies. Daisy and Coulson learn about Simmons' memory implant, but when they try to remove it, a freak accident ki
Nathaniel recruits a young John Garrett, who turned against S.H.I.E.L.D. and was killed by Coulson in the original timeline. Nathaniel shows him this future while perfecting a way to transfer Inhuman powers to his men. S.H.I.E.L.D. keeps Jiaying at the Lighthouse for protection. Daisy learns that Kora is her half-sister, who died before Daisy was born in the original timeline. She spends time with Jiaying but does not tell her that she is her daughter. Coulson and Gordon teleport into Afterlife,
Kora claims that she wants to work with S.H.I.E.L.D., despite the agents deducing that she has ulterior motives. Knowing that Sibyl is aware of their every move, Daisy, Sousa and Mack decide to act unpredictably and take a quinjet to follow Nathaniel and the Zephyr into space. Nathaniel attempts to glean information from Simmons by using Deke as leverage, but is unable to find Fitz's location in her memories. His actions cause Simmons to forget who Fitz is completely. May interrogates Kora, who
Upon landing on the Chronicom ship, Daisy searches for Deke and Simmons while Sousa and Mack fend off a group of Chronicom soldiers. Sibyl plans for Daisy to find Simmons to jog her memory, but an impatient Nathaniel has Kora confront them. Daisy talks Kora down and she lets them escape, forcing Nathaniel to knock her out. The agents return to the Zephyr and escape the ship. With the Lighthouse the only S.H.I.E.L.D. base still standing, Garrett plants bombs to destroy it, but Coulson, Yo-Yo, and
Fitz explains that he has traveled from their original timeline to this new one using the Quantum Realm. Deke decides to remain in the new timeline to help send the others and the Chronicoms back to the original one, becoming the new leader of S.H.I.E.L.D. When they arrive back in the original timeline, Fitz helps Simmons remember him and the life they lived while they were building the time machine, including their daughter Alya. Coulson, May, Mack, and Daisy infiltrate the Chronicoms' ship to