Zachary Quinto has revealed that Star Trek 3 will revolve around the "five-year mission".
The 37-year-old, who will reprise his role as Mr Spock in the third instalment, spoke about the upcoming film at the Television Critics Press Tour, where he was promoting his new show, The Chair, reported Variety.
"I think the five-year mission will be a part of this next film in some way. We're coming up on the 50th anniversary of one of the most iconic sci-fi series in entertainment history so it's inherently an ongoing story," he said.
" But I do think that we'll feel some sense of evolution in these characters that's been building through the first few films."
The five-year mission, narrated by James T Kirk in the opening to Star Trek: The Original Series, is an assignment given to Starfleet starships "to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before".
Zachary appeared to confirm rumours about screenwriter Roberto 'Bob' Orci making his film directorial debut with Star Trek 3, after JJ Abrams - who directed the previous two films - passed on the job.
"Bob is definitely sort of a purist about the Trek universe so I've spoken to him a number of times about his ideas and they're really exciting and I'm really excited that we get to be a part of his feature directorial debut," he said.
"It'll be a different world without JJ on set every day, but this is a family and Bob is an essential part of that family and we're all really excited to see where it goes. The script is being tightened and polished and finished, and I imagine that the phone will be ringing in the next few months to see when we'll go back into production."
Chris Pine, Zoe Saldana, Simon Pegg and John Cho are expected to return for the film, which will be released in 2016.