From the introduction:
I hope you like giant robots, because this world's all about the giant robots. Also, I hope you like corporate-run dystopias. And rogue AIs. And a little unscrupulous bioengineering on the side.
Welcome to the world of the Armored Core- a heavily-armed fighting vehicle capable of being customized to meet the needs of any battle. And there are plenty of those, since the megacorps vying for supremacy here play rough. You get to spend the next ten years trying not to become a casualty of the corporate wars or one of the other threats in this world.
At least you're one of the few with an AC and the skills to pilot it. Whether as a mercenary or a loyal agent of a megacorp, you have what it takes to become very rich, or very dead. Maybe you can even make a difference here... maybe.
Keep me entertained, Jumper.