On Rossa, a continent that people have already become accustomed to considering as their home, wave after wave of hordes of semi-intelligent lump spiders are rolling in. Obedient to the cruel will of the Chegetazurs, who have already subjugated more than one race of Midday, this living weapon is destined to destroy humanity, to erase the very memory of its short stay in this world. There is nothing to oppose the onslaught of millions of armies, except for the illusory hope that this time Rostik Grinev, a man endowed by Poldnev with strange abilities and knowledge, will find a way out of the impasse. But will he have enough time? And what will be the price for finding peace?