The world will never be the same again. An unprecedented and grandiose historical event - the outbreak of Supernova, the beginning of the new era. Radiation from the star will kill all adults over 13 years old within a year. Is it possible to prepare children for independent life in such a short time? What will the new world be like? Adults have always associated childhood with kindness and peacefulness. However, they could not even imagine that less than a year after the beginning of the Age of Supernova, the world of children would be plunged into the abyss of a new world war.