A new club called "Ark" opens in Moscow, which in the end was supposed to become the grandest amusement park either based on "Star Wars," or "Star Trek," or some other fantastic film about space. The place is unusual, and getting to the opening is not so easy. Tickets cannot be bought: they are given in a sense to the "chosen ones." Nastya was not such, but everyone managed to get the coveted pass. But could the girl even imagine for a minute how the visit to the "Ark" would turn out for her? That same evening, Moscow was shaken by a powerful explosion, which literally demolishes the entire pavilion with the "Ark," and with it three dozen people. This is a real tragedy, people are shocked. And the further, the more questions arise. Perhaps everything that happened is not accidental? And maybe thirty guests of the pavilion did not die? If so, what are their chances of rescue and where are they now? Too many questions and not a single intelligible answer...