2380. Humanity has mastered the technology of rejuvenation and learned to live forever. The Interstellar Commonwealth already unites more than 600 planets inhabited by people and connected by a network of superluminal transitions called wormholes. However, in this ideal future world, the incredible suddenly happens: two neighboring stars, a thousand light years away from the Commonwealth, suddenly disappear. Scientists come to the conclusion that some technologically advanced civilization built a giant shell around each of the two star systems. But for what purpose? What is this - an attempt to defend against an external threat or, conversely, the need to isolate an insidious enemy? To find out the truth, the Second Chance spaceship is sent to the disappeared stars. But what if in reality everything is even more complicated and dangerous than it seems?