Guillermo del Toro is a 48 year-old filmmaker making a 12 year-old boy's movie — and he's the first to admit that in our exclusive trailer commentary for "Pacific Rim."

MTV News sat down with del Toro this week to talk about everything that was revealed in the first full look at the filmmaker's upcoming monster-battling robot epic. Even if you've watched the trailer on a continuous loop since its debut, trust us — you haven't learned anything until you've heard del Toro's blow-by-blow account.

The Making of Mako
The first scenes featured in the trailer, depicting a young girl witnessing a Kaiju attack, are not the first scenes you'll see in "Pacific Rim." The sequence actually takes place in the middle of the film, a flashback that reveals the history of co-lead Mako Mori (played by Rinko Kikuchi), who lost everything to the Kaiju.

"This is how she decided to fight Kaijus, and what happened to her as a kid," del Toro explains.

Another World
As Charlie Hunnam's Raleigh Antrobus explains (in a monologue that does take place at the beginning of the film), the Kaiju invaded Earth from a portal at the bottom of the Pacific Ocean. Del Toro assures that we'll get up close and personal with that portal.

"This is the geological fault at the bottom of the ocean. But in the film you'll see the inter-dimensional portal above that," he says. And that's not all: according to del Toro, we'll also see what's on the other side of the portal, which is where the Kaiju come from.

First Contact
Man met monster when the Kaiju forces emerged from the Pacific, with their first target being San Francisco. The destruction of the City by the Bay, as seen in the trailer, is indeed the first Kaiju assault recorded in human history.

"It's the very first attack, ever," says the director. "I wanted very much to show the scale. The whole movie is about scale. Literally, there are set pieces that are impossibly big. I wanted very much to have this image to show you what the tip of a nail of a Kaiju looks like."

Two Heads are Better than One
No one person can pilot a Jaeger, the massive robots created to combat the Kaiju. Such a piece of machinery can only be operated by two pilots, serving two very specific functions.

"The pilots wear suits that are neurally linking them," says del Toro. "They have a spinal clamp that links their spines. They have relay gel in their helmets that transmit their impulses to one another. They move in synchronicity. One is handling the neural network of the left side of the Jaeger, and the other is handling the neural network of the right side of the Jaeger. They are connected between them."

Childlike Wonder
If "Pacific Rim" feels like it's tapping directly into the 10-year-old still lurking inside of you, you're not the only one. Del Toro says that the upcoming movie speaks to his inner-child, while presenting itself as a movie for adults.

"The idea for me is to create a movie that my head would explode if I was 12 or 10, but at the same time, treated visually like a very adult movie," says the filmmaker. "The textures, the colors — they're all taken very seriously."