In a "Rust Belt" city filled with discarded metal and digital garbage, orphan Zhao Fofa makes a living by picking up rags. His world is made of rust, dirt and forgotten detritus. However, by chance, he unearthed the remaining primary tutorial materials on artificial intelligence from a pile of abandoned server hard drives. The instinct of thirst for knowledge drove him to use the worn-out equipment he picked up, like a sponge absorbing water, and began a difficult road of self-study on the ruins.
