Zachary Quinto and his Star Trek co-star Zoe Saldana were recently on Spike’s Lip Sync Battle and Entertainment Weekly was able to catch up with the two on set and ask them some Star Trek questions. Specifically, EW asked what challenges were facing their characters and if it would affect their on-screen relationship at all. Quinto revealed that Spock will be going through an “existential moment” and that he’s “at a crossroads between his obligation to his Starfleet and his Vulcan roots.”
His planet was destroyed and they’re rebuilding, and he’s trying to figure out where his energy is best directed to help other people. He comes into a new awareness of his own mortality for a number of reasons, and there’s a lot of stuff that he’s trying to figure out in this film. By the end, I think he realizes the best path for himself moving forward.