Chris Hemsworth didn't return for Star Trek 4 because he didn't like the script.
1 / 8
Hemsworth had a small role as George Kirk in J.J. Abrams' 2009 Star Trek reboot.
2 / 8
George sacrificed himself in the film's cold open - a very emotional sequence that set the stage for the film.
3 / 8
The plan for Star Trek 4 called for Hemsworth, now a bona fide star, to reprise George.
4 / 8
He would have co-lead the film with Chris Pine, but the project was shelved.
5 / 8
Hemsworth said he didn't think there was a good reason to bring George back.
6 / 8
And he didn't want to be underwhelmed by a weak story.
7 / 8