很久以前,在遥远偏僻的山村,山上的夜叉池经常决堤泛滥,为害村民。最终人类和池中的龙族达成协议,规定人类必须每天早、中、晚敲钟三次,夜叉池的水才不会肆虐。这个传说代代相传,到了现代,只有一位老人还在坚守这个传说,按时敲钟。老人临终前,将敲钟的任务托付给逃避城市文明的年轻人荻原晃,荻原和妻子百合守护在这里,过着简单幸福的生活。。Astronomers spot anomaly headed for the earths solar system. The wealthy elite keeps the destruction of the human race secret so they can prepare to only save themselves. After the disaster comes to past what is left of the human species tirelessly attempt to survive their interstellar lives in an unstable mothership.。