A young geologist is traveling by train to visit his sister in the countryside after having received a mysterious letter from her.

I've Heard the Ammonite Murmur

In a world where time passes at a crawl and the blood of your neighbor runs blue, 17-year-old high school student Ayato Kamina goes about his daily life within Tokyo Jupiter oblivious to the world around him, having been educated with the fact that all civilization but Tokyo has been destroyed. But all that changes when the mysterious civilization "MU" invades his home, raining destruction down from the sky in the form of strange monsters called Dolems. The events that occur next will lead Ayato to the mysterious woman named Reika Mishima, to the truth of their existence, the discovery of what and who he is, and to the powerful angelic robot RahXephon.

RahXephon

Ayato and Haruka are middle-school sweethearts whose lives take a dire turn when the mysterious Mu invade Tokyo in the year 2012. Protecting humanity from the Mu may be Ayato's destiny, but what he really wants is to regain the relationship he once had with Haruka... a love that will have to transcend space, time, and reality itself.