The planet Maraucan was famous for its unpredictability. Traces of a civilization that disappeared a million years ago appeared here in the most bizarre way. But it was not the mysteries of ancient history that brought Voldemar Astakhanov here. He, a planetary scientist and part-time agent of the Galactic Security Service, was much more worried about completely modern events. For example, why almost every one of the settlers who built a tourist complex on Maraucan had a double, who “lit up” centuries ago on a completely different planet during the mysterious events that led to the appearance of a new Supernova in the Universe...