In 2868 AD, 650 years after mankind established a new home in the Andromeda Galaxy through the grand "Galactic Pioneer Plan", the prosperous interstellar civilization encountered a disaster from the Crab Nebula. An extremely violent meteorite swarm spanned the interstellar space, bringing a deadly gift - "stardust particles". This unknown particle exhibits unique transformation characteristics: it can impart twisted "life" to mechanical structures, and it can also gradually erode carbon-based life forms, converting parts of them into machinery, forming a hybrid existence between life and machinery.
