Star Trek Into Darkness reunites the team filmmaker J.J. Abrams assembled to reboot the sci-fi action franchise in 2009 and the cast reconnected right away, says actor John Cho.

"We fell right back into it," Cho, who stars as Hikaru Sulu, told CBC News on Tuesday, a day after appearing at a Toronto sneak-preview screening.

"When we got together [again], I think the same bits — comedic bits — we were doing off-camera just picked up again."

Cho talked to CBC's Eli Glasner about his approach to portraying Sulu, what he learned from buzz filmmaker Abrams and his desire to see more Asian-American actors onscreen.

One of the blockbuster season's most anticipated titles, Star Trek Into Darkness sees the return of the young Enterprise crew from the 2009 film Star Trek — portrayed by Chris Pine, Zachary Quinto, Zoe Saldana, Karl Urban, Simon Pegg, Anton Yelchin and Cho. This time, they're opposed by a dastardly villain played by series newcomer and noted British actor Benedict Cumberbatch.

Though originally set to open May 17, Star Trek Into Darkness will hit theatres a day earlier, Hollywood studio Paramount has announced. Imax theatres will also offer earlier screenings, beginning May. 15.