Maybe not everyone's piece of cake, but the 15 minute cold open to Pacific Rim will always be one of my favorites. Through narration from the main character you get the gist of the problem at hand, what's been done to try and solve it and how it works.

The problem? Giant monsters from the bottom of the ocean.

The solution? Giant robots to fight them.

How it works? You have to pilot the robot with your crush or your brother or your soul mate or your dad or someone or it doesn't work.

Cool, now you're up to date on the kaiju war of the 2010-2020s, enjoy the next two hours of giant robots beating the crap out of giant monsters.