The galaxy is on the verge of a bloody war, which the power-hungry Chang, the dictator of the planet Rain, is preparing to unleash, seeking to create his own Empire and achieve world domination. At this tense moment, the agent of the earth's External Space Intelligence, Yaroslav Samarin, experiences a true miracle - a meeting on a planet lost in deep space with representatives of another, non-human civilization. It is their support and the great power of love that united Yaroslav with the beautiful representative of our brothers in mind that help Samarin and his friends stop the monstrous plans of maddened maniacs and save the Universe from imminent death.