Guillermo del Toro's Pacific Rim sounded like a pretty simple concept when we first heard about it: giant robots fight giant monsters. But the more and more we see about the film -- especially in this most recent trailer -- the more complex and deep the world turns out to be. Instead of simply piloting the robot Jaegers, it turns out that these behemoths take two pilots who are not only in synch physically but also have to meld minds as a way to process all the information.

Stars Charlie Hunnam and Rinko Kikuchi, who play washed-out Jaeger pilot Raleigh Becket and rookie Mako Mori,  talk about the joined minds in this new featurette that also has del Toro dropping some knowledge.

Pacific Rim, which also stars Idris Elba, Ron Perlman and Charlie Day, opens July 12.