Sunset 6 is a geocentric exploration and research ship, which encounters geocentric motion at the boundary of geocentric region. Due to design defects, the whole engine compartment is separated from the main hull. The residual hull of Sunset VI, which lost power, has not been destroyed by the geocentric environment, and there is a life support system that can continue to operate for 80 years. However, due to the accident caused by the suicide of its crew in a desperate environment, only the pilot survived in the end, so the sunset plan was ostensibly stopped because of this accident, that is, there would be no follow-up ships to rescue it.