初の海王星有人探査の際、その衛星軌道上に巨大な人工物が発見された。
それは全長約２００ｍ　一番太い部分で直径５０ｍにもなる巨大な宇宙ステーションの残骸だった。
未登録のステーションとなれば軍事目的の可能性が高くなるが、各国は 『海王星に有人の軍事基地を作る理由が無い』 関与を否定する。24時間の観察の後に行われた内部探査で、国籍も様々な7人の男女の死体を発見。
更に日誌も発見され中には 『2238年6月21日　遭難』 と記されていた。
2238年といえば今から100年以上先の事である・・・

On the first manned expedition to Neptune, a large artificial object was found on the path of orbit of its satellites.

It was the wreckage of a large space station, about 200m in length, and around 50m wide at its widest point.

Although the possibility of an unregistered station serving military purposes were high, most countries stated that there was "no reason to set up a manned military base on Neptune", and denied all associations.

In the internal investigation that was conducted after 24 hours of observation, 7 bodies of men and women of varying nationalities were found. Furthermore, a journal was discovered, in which the words "June 21st, 2238: Disaster" were inscribed.

2238 is, however, more than 100 years ahead of the present year...