America is being invaded by aliens, and the government’s answer is to unleash monsters! I’m pretty sure that’s the plot of at least four Godzilla movies, and it’s also the plot of the new animated movie from Dreamworks, Monsters vs. Aliens.

The first trailer for Monsters vs. Aliens is here, and the film looks like a lot of fun. Imagine the cast of Monsters Inc. forced to fight the aliens from Mars Attacks and you’ll have a good picture of what’s going on here. With Madagascar 2 in theaters this weekend, odds are you’ll be able to see the trailer attached to it on the big screen, but we’ve got it for you right now.

Watch the first trailer for Monsters vs. Aliens below, and along with that we’ve got a second video, a behind the scenes look at the film.

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BEHIND THE SCENES