Who will help the Earth chosen as the next target of the brutal race of invaders - "strangers"? Friendly races of the Galactic Federation offer their support to humanity - but, as it turns out, even the most "friendly" help is disinterested. Now earthlings have learned a cruel lesson at a high cost. "Lord, protect us from our friends, and we will defend ourselves from enemies!" Now the very existence of humanity in space is at stake.