Year 2020: The geomagnetism begins to weaken rapidly.
Same year, Asia, Plan A begins, Construction of the geomagnetic field model
Same year, North America, Plan B begins, Construction of the human underground city.
Year 2030: Geomagnetism vanishes, the biosphere falls to disorder globally, the climate changes, the sun's radiation abnormal, "The Desert Era" begins.
Year 2040: Plan B succeeds; The underground opens for humans to live.
Year 2043: Plan A succeeds, Weak magnetic field covers the whole planet.
Year 2045: With marine organisms of the Pacific Ocean as the centre, all species of the entire planet changed forms; "The Great Disaster Era" has come; War begins.
Same year, the Northern Base, the Southeastern Base construction complete.
Same year, the Underground Base assists in the construction of the Virginia Base.
Year 2050: Midst of war; Human loss severe; Establishment of the "Fusion Faction".
Year 2053: Humans have observed a widespread gene distortion; Birth rate sharply declines.
Year 2061: Wave of variant rodents erupts; Southeastern Base falls.
Year 2066: The females of the four human base unanimously pass the "Manifesto of the Rose"; The bases make public the fertility scoring system; Females scoring 60 and above will sign a n agreement with the base and voluntarily accept artificial insemination.
Year 2067: Northern Base, the "Judgement Day" incident. The "Judge Bill" is made public; Judges hold the license to kill and execute every contaminant indiscriminately.
Year 2070: The Fusion Faction defects; Establishment of the Highland Research Institute.
Year 2073: Virginia Base falls.
Year 2105: Northern Base, the "Rose Incident" breaks out; Females unite to oppose the base's extreme exploitation of fertility; The base suppresses the unrest; Every female who scored above 60 are placed under house arrest in "The Garden of Eden".
Year 2135: Condition of communication further deteriorates; The Northern Base and the Underground Base closes the day-to-day communication channel, only the emergency channel remains open.
Year 2150: Population of the Northern Base increases steadily; The "Resuscitation Era" begins.
Year 2154: Gene Inspection technology matures.
Story begins.