Earthling Gennady Pavlov, who became one of the galactic Observers, still wants to take revenge on the killer of his teacher, the Elian Iteni Rin. Previously, he believed that his enemy had disappeared without a trace, but he suddenly learned: the criminal was hiding on one of the planets colonized by the Elians. The Earthling decides to take revenge without informing the Observers, and falls into a trap set by the enemy. Now he faces a fight with a strong, mysterious and ruthless enemy. And there is nowhere to wait for help. After all, many of the Observers are in favor of the official extradition of Gennady, who broke the law, to the Elians - and the rest are in no hurry to come to the aid of the earthling...