Guillermo del Toro's first film since 2008's Hellboy 2 centres on giant robots dubbed 'Jaegers', who do battle with an army of aliens that has invaded the Earth.
Charlie Hunnam stars as former pilot Raleigh Beckett, who is tasked with piloting one of the robots alongside rookie officer Mako Mori (Rinko Kikuchi).
Idris Elba, Ron Perlman and Charlie Day are among the film's supporting cast, while the script is penned by Clash of the Titans scribe Travis Beacham.
It has been rumoured that Legendary Pictures is already developing a sequel to the movie.
Pacific Rim will open in 3D, IMAX 3D and 2D theatres on July 12, 2013.
Watch a previous trailer below: