It would seem that the war with the Know-the-Road, aggressors from another Metaverse, is over. But on a trip to an exotic black hole, the Geodar research spacecraft disappears. What is this? A new round of confrontation or a provocation of the Nuclears, the inhabitants of the bulge, for whom developing humanity is a competitor? What will the rescue expedition, which is entrusted to Ruslan Goryunov and his associates, discover near Blackhole? Why is there suddenly a suspicious fuss about the Superstring, a human-made weapon capable of extinguishing stars? Will the earthlings have allies, or will they have to fight alone? Will there be enough time to find answers to these questions?