In the north pole, there were secret settlements called "hidden villages". However, they struggle to survive on the north pole, this forced them all to become one nation, with their own rules and terms. Then out of the need to find a material to advance their technology, they accidentally found a substance, that they called "White snow" that were thousands of years ahead of anything of its time, as the nation begun to strive and grow quicker than any nation. Years later the nation has changed a lot. It's ruled by an iron fist, with a girl who's been altered to be used as a military demonstration. Will this girl be able to survive? Find out in the heart of gears! (New chapters out every Monday)