In a world after the nuclear apocalypse a scholar helps a small group of children and adults survive, staying with them in the basement of the former museum of history. In his mind he writes letters to his son — though it is obvious that they will never be read.
It is the future, the world is in ruins and a large portion of the population consists of deformed mutants living in reservations. In this world a man decides to spend his vacation visiting the ruins of a museum that is now buried under the sea.
