In 2149, after the “Great Rust” disaster, the old world’s technology was reduced to scrap, and humanity retreated to the Iron Dome City. A mysterious energy crystal known as the “Source Core” was discovered. It could power the mechanical wreckage of the old era, giving rise to a new order led by “Frame Masters.” Eighteen-year-old Lin Ye starts out as a scavenger, but will soon pilot steel giants and uncover the ultimate secrets of the Source Core and human civilization.
