Apple TV has released the first trailer for Brothers, a new comedy series that turns one of Hollywood’s longest-running real-life friendships into a wildly fictional family crisis. Matthew McConaughey and Woody Harrelson play heightened versions of themselves who discover a possibility neither man is quite prepared to handle: they may actually be brothers.

That premise is the engine of an eight-episode series arriving September 23, when Apple TV will release its first two episodes. New installments will then stream weekly each Wednesday through November 4.

The show takes place after a rough moment for Harrelson’s character and his family. Following the collapse of his daughter’s engagement, Woody heads to Austin for what is supposed to be an extended, restorative stay at Matthew’s ranch. Instead, a supposedly buried family secret comes spilling out when Matthew’s mother, Ma Mac, accidentally suggests that the two friends could share more than decades of friendship and a few stories from Hollywood.

From there, Brothers appears to embrace the kind of comedy that comes from making a bad situation worse through sheer commitment. Woody, naturally, becomes determined to uncover the truth, while Matthew has a separate public-facing problem: a possible campaign for governor of Texas. The trailer sets up a clash between private chaos and celebrity image-making, with the ranch becoming the pressure cooker where both men’s polished personas begin to crack.

It is an especially neat setup because McConaughey and Harrelson’s friendship has always been part of the appeal. The pair have known each other for decades, worked together on projects including EDtv, and have often leaned into their laid-back, slightly unpredictable public chemistry. Brothers does not ask viewers to believe they are entirely different people. Instead, it invites them to watch exaggerated versions of McConaughey and Harrelson wrestle with an absurd question that feels just plausible enough to keep the joke moving.

The real-world connection gives the show an advantage that many celebrity comedies spend seasons trying to build. Audiences already understand the broad outlines of the relationship: McConaughey is the Texas-born Oscar winner with a reputation for philosophical one-liners and effortless cool; Harrelson is the sharp, restless character actor whose career has comfortably moved between serious drama, broad comedy, action films, and prestige television. Put fictional versions of those personalities under one roof, add their families, a political ambition, and a potentially life-changing revelation, and there is plenty of room for the show to play with fame, masculinity, family mythology, and the stories celebrities tell about themselves.

Apple describes Brothers as a story about friendship, family, fame, and the messy boundary between myth and reality. That framing matters. The series looks less interested in solving a mystery than in exploring what happens after a rumor gets powerful enough to rearrange everyone’s behavior. Whether the characters are literally related may be only part of the fun. The larger question is how quickly a lifelong friendship changes once it carries the emotional baggage of possible sibling rivalry.

The creative team also suggests Apple TV is aiming for something warmer than a simple celebrity send-up. Lee Eisenberg serves as showrunner and executive producer. Eisenberg is an Emmy nominee and Peabody Award winner whose work has often found humor in uncomfortable social situations and emotionally messy characters. McConaughey and Harrelson are both executive producers, which should help the series feel tailored to their individual comedic rhythms rather than like a generic sitcom with famous faces attached.

Natalie Martinez, Brittany Ishibashi, Nolan Almeida, Ella Grace Helton, Noah Carganilla, Highdee Kuan, Oona Yaffe, and Holland Taylor round out the ensemble. Taylor’s Ma Mac seems likely to be a central source of trouble, given that she is the one who casually detonates the secret at the heart of the story.

Brothers is produced by Paramount Television Studios, with Trent O’Donnell directing multiple episodes, including the pilot. David West Read, Natalie Sandy, Trish Hofmann, Bill Bost, Jason Winer, David Finkel, Brett Baer, and Jeremy Plager also executive produce.

For Apple TV, the series adds another recognizable comedy to a lineup that has increasingly mixed star-driven concepts with more character-focused shows. But Brothers has a hook that is hard to manufacture: two actors with genuine history, openly having fun with the public’s perception of them. If the series can balance that inside-baseball appeal with a story that works for viewers who have not followed every McConaughey-Harrelson anecdote, it could land as a lively fall comedy rather than just another celebrity vanity project.