A nuclear war destroyed the Dalian civilization, burning the entire planet. The surviving residents flocked to the untouched zone, where the city-state of Dal-Gey grew up - one and a half billion on a patch of 200 kilometers, with its own views on life and secrets. The meeting of Earthlings and Delhiites puzzled everyone about the absolute identity of representatives of different planets, but did not prevent the formation of close contacts. The secret pro-fascist organization Yar-His, striving for unlimited power, is concerned about the growing influence of the earthly consulate and, relying on gangsters, arranges provocations against earthlings, organizes kidnapping of the consul. The crew of the space patrol ship "Tornado" is sent to the rescue of their comrade.