Quentin Tarantino's 'Star Trek' idea is ''bananas'', according to Karl Urban.

The 46-year-old actor plays Doctor McCoy in J.J. Abrams' rebooted movie series, and he's teased details of the legendary director's plans for his own 'Star Trek' film.

He shared: ''Quentin Tarantino went in to [producer] J.J.'s offices and pitched him an idea for a 'Star Trek' movie. I know a little bit about what that is, and it's bananas.''

Tarantino, 55, is currently busily working on his much-anticipated drama film 'Once Upon a Time In Hollywood', which will star the likes of Leonardo DiCaprio, Brad Pitt and Margot Robbie.

But Karl has admitted it would be a ''dream come true'' if he were given the opportunity to work with Tarantino.

He told TrekMovie: ''He is currently making a film with Brad Pitt and and DiCaprio. So, it is going to be a year away from finishing that.

''So, it would be really rad to get to make a film with him. That would be a dream come true, he is definitely an auteur. Whether you like his films or not, he is a good filmmaker. And he makes interesting stuff. So, to me, that is when you get the best results.''

'Once Upon a Time In Hollywood' is schedule for release in July 2019.

Speaking previously about the project, Tarantino - whose past hits include 'The Hateful Eight' and 'Django Unchained' - shared: ''It takes place during the 1969 Hollywood era at the height of the counterculture explosion, at the time of the hippie revolution.

''During the summer, little by little, block by block, we'll be transforming Los Angeles in the psychedelic Hollywood of 1969.''