In the space calendar 0385, the Earth suffers from overpopulation and humans start to build space colonies. Cark, the protagonist, works for the Earth Federation's space development office. He is a brilliant engineer in space physics and is working for the Sirius third planet colony. He gets engaged to his girlfriend Mary, but they have to postpone their wedding. Five months later, Cark, accompanied by his robot Carry, decides to visit Mary and prepare the ceremony at last. But when he arrives at the space station where she is in, everything is quiet. Then a beam of light hits him. He wakes up sometimes later, inside a sort of underground graveyard, with pieces of dismantled robots surrounding him.

[From Wikipedia]