Plot Synopsis

Based on the Marvel Comics by Chris Claremont and Bill Sienkiewicz, LEGION is a one-hour series that centers on the story of David Haller, a troubled young man who may be more than human. Diagnosed as schizophrenic as a child, David has been in and out of psychiatric hospitals for years. Now in his early 30s and institutionalized once again, David loses himself in the rhythm of the structured regimen of life in the hospital: breakfast, lunch, dinner, therapy, medications, sleep. David spends the rest of his time in companionable silence alongside his chatterbox friend Lenny, a fellow patient whose life-long drug and alcohol addiction has done nothing to quell her boundless optimism that her luck is about to change. The pleasant numbness of David's routine is completely upended with the arrival of a beautiful and troubled new patient named Syd. Inexplicably drawn to one another, David and Syd share a startling encounter, after which David must confront the shocking possibility that the voices he hears and the visions he sees may actually be real. A haunted man, David escapes from the hospital and seeks shelter with his sister Amy. But Amy's concern for her brother is trumped by her desire to protect the picture perfect suburban life she's built for herself. Eventually, Syd guides David to Melanie Bird, a nurturing but demanding therapist with a sharp mind and unconventional methods. She and her team of specialists -- Ptonomy, Kerry and Cary -- open David's eyes to an extraordinary new world of possibilities.

The sophomore season of LEGION premiered Tuesday, April 3, 2018 at 10pm ET/PT on FX. From childhood, David shuffled from one psychiatric institution to the next until, in his early 30s, he met and fell in love with a beautiful and troubled fellow patient named "Syd." After Syd and David shared a startling encounter, he was forced to confront the shocking possibility that the voices he hears and the visions he sees may actually be real. Syd led David to "Melanie Bird" , a demanding but nurturing therapist who heads a team of specialists -- "Ptonomy" (Jeremie Harris), "Kerry" and "Cary" -- each of whom possesses a unique and extraordinary gift. Together, they helped David to recognize and harness his hidden powers. With their support, David finally unlocked a deeply suppressed truth -- he had been haunted his entire life by a malicious parasite of unimaginable power. Known as the "Shadow King," this malevolent creature appeared in the form of David's friend "Lenny", but is actually an ancient being named "Amahl Farouk." In an epic showdown, David and his friends battled his demon, ultimately forcing it from David's body. Unfortunately, Farouk found a new host -- Melanie's husband "Oliver Bird" -- and escaped. Just when they thought they'd earned a moment of respite, a mysterious orb appeared and took David away to an unknown place at the end of Season 1. Now, in Season 2, with David and Oliver missing and Farouk on the loose, the team forms an unlikely alliance with their former enemy "Clark" and his well-funded government organization, Division III. Meanwhile, Amahl Farouk is on a new path to attaining infinite and world-ending power. In the season opener, "Chapter 9," unlikely alliances are formed and the search for the Shadow King begins.

LEGION returned for its third and final season on Monday, June 24, 2019 at 10pm ET/PT on FX. During an epic showdown in the previous season, David managed to push Farouk out of his body and gain control of his mind. With Farouk on the loose, the team formed an unlikely alliance with their former enemy, Clark DeBussy, and his well-funded government organization, Division 3. Unfortunately, the hunt for Farouk reawakened the dark voices in David's head, and within them, a lust for power. Now, at odds with everyone he once considered a friend, David enlists the help of a young mutant named Switch whose secret ability is key to his plans to repair the damaged he caused...all while David gains a following.
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FX premiered the series finale of LEGION on Monday, August 12, 2019 at 10pm ET/PT. The series ender, "Chapter 27," is the end of the end. Written by Noah Hawley and Olivia Dufault; Directed by Noah Hawley/John Cameron.