Del is a man who believes he has lived alone on this world after the human race has been pushed down to the total disappearance of Earth. He lives alone in the city that has now become deserted, being somewhat pleased with his fate and loneliness, living in a certain state of utopia that he has created with much meticulously. This has to change radically when she is discovered by Grace, a young man she sees as a kind of intruder and has a dark past and reason. Moreover, Grace does not want to leave again.