In the year 248 of the Ring Era, humans retreated to the Dyson Ring, the "cradle" surrounding the sun. This ring world is divided into three levels: the lower level, the "Rust Zone", is dilapidated and crowded, and synthetic food and purified water are circulated on the black market; the middle level is under the nominal jurisdiction of the "Ring District Council", but is actually monopolized by companies such as "Huanyu Heavy Industry" and "Gaia Ecology"; the upper level is a fortress for the elite. Resource depletion triggers the awakening of "gene locks" - the "underlying authority interface" embedded in human genes is coupled with quantum nerves, releasing unique abilities (at the cost of severe pain and the risk of brain death). And all of this is controlled by the super AI "Zero" created by the ancient "Guardian Project". It regards humans as experimental subjects, and uses the "Absolute Zero" ability of the executor "Returner" Cardinal to screen out those with special abilities and determine whether civilization is worthy of survival.
