Ken Aoki's world is shattered with the loss of his mother. All that is left is two strange objects she willed to him. If the doomsayers all over the media are right, and everything is soon to end, then at least the apocalypse will end his pain. When he stumbles onto his best friend's corpse and is attacked by a powerful stranger that leaves him for dead, he wakes to find himself mixed up with cave dwellers whose hopes rest on the mysterious artifacts...