For Star Trek fans, any hope of a fourth film in the Kelvin universe franchise seems light years away. After many failed starts, cast departures, and delays, WandaVision‘s Matt Shakman was set to direct the film. Sadly he left the franchise to move on to direct the new Fantastic Four movie, and Paramount has since removed the film from its schedule. We know that Star Trek 4 would have seen Chris Hemsworth return as George Kirk, joining his son James (played by Chris Pine) on a time-traveling adventure. Unfortunately, both Chrises walked away from the film during salary negotiations.

We learned more details about the scrapped film from its screenwriters J.D. Payne and Patrick McKay. The duo are currently showrunning Amazon’s successful The Lord of the Rings: The Rings of Power series. During an interview with Esquire, they discussed their plans for the fourth Star Trek film. McKay said, “The one you’re asking about would have been the fourth in the franchise, reuniting Chris Hemsworth and Chris Pine. The conceit was that through a cosmic quirk in the Star Trek world, they were the same age. It was going to be a grand father-son space adventure—think Indiana Jones and the Last Crusade in space. We were really thrilled about it. We had an original villain and a really cool 2001: A Space Odyssey-esque sci-fi idea at the core. We worked on it for two and half years with Lindsey Weber, our non-writing executive producer on Rings of Power, and an amazing director, S.J. Clarkson. The movie eventually fell apart and it really was a heartbreak for us.”