In 2043, at a meeting of the World Space Agency, the Americans reported that their devices “Pioneers”, “Voyagers”, “New Horizon” and “Star Wanderer” did not actually leave the solar system, but “ran up against” a certain border on a distance of 121.57 astronomical units from the center of the Sun. And thus, humanity is literally locked inside the solar system. However, a thorough analysis of the trajectories of space debris that flew beyond the orbit of Pluto, as well as comets, allowed us to put forward the hypothesis that our reality looks like a kind of porous “sponge”, in which star systems are “bubbles” of space-time inside some infinitely solid medium. And light, as well as particles of matter, can propagate within this medium only along a kind of waveguide connecting these “bubbles” to each other. To confirm that the barrier limiting the solar system has points of penetration to other stars, a ship with an international crew is sent to one of these points.