If you're asking "What is Charge about?", well, the answer is Charge is about whatever you want it to be. It's a RPG system that hits that wonderful sweet spot where it's both simple to use and adaptable to any setting. You could take the basic 12 actions and start up a game in five minutes, charge things up with the Momentum mechanic, add Talents and the Progression mechanics for longer campaigns, shake up your plot with World Forces.. Charge is a like a lego set, something that can be used to play a quick one-shot, a series of games, or even be built into your own, original world.
While other games might resist being hacked or fall apart once you start pulling on threads, Charge was CREATED to be modified. Change the names of actions! Make it so players have 3, 6, or 9 actions instead of 12! Create playbooks or character classes! Adjust dials so things are harder or easier! Grab a bunch of community-made Extras and throw them into your game, then make your own!
The whole point of this SRD is for you to copy it, rip it up, break it apart and reassemble it, and make it something that's unique to you and the story you want to tell - and there's a community willing to help you out, too.