The story is set in a world where a ring like that of Saturn encircles the Earth, which projects a shadow on the land. A nation on wheels follows this shadow and like under it catching 'Corona rocks' (just the name of the meteor here) and turns them into Corona Solids and ultimately into body suits used in wars, as fules and in development of science and technology. The story does not have any central character, it shifts its focus from one character to another. The story follows a power struggle between four different groups.I would not rather go in much detail as it will leadto spoilers.

The plot is highly predictable, the story lacks depth and the character development is not that great.The action is fine though.

I think if the manga would have countinued for more chapters and had given time to go in more depth, it might had turned to be more engaging. As you would get bored by reading just the first two volumes.