In a post-apocalyptic dystopian world, Hera, who has lost her memory, is discovered in an unidentified spacecraft that has suddenly crashed. In this city controlled by conglomerates and super AI, where the environment is dangerous and humanity has fallen, Hera is pure — as though she has never been contaminated by society. Although intelligent, her common sense is incompatible with this world. Her ideas of “the way the world should be” are far from reality. In the process of understanding this world, she forms an inexplicable bond with four extraordinary characters. Under the impetus of a chance created by a mother, the five individuals, each with their own goals, search for a breakthrough to change this chaotic world.