[5] The films focuses on Fedor Alexandrovich's research into the cause of the Chernobyl nuclear disaster in Ukraine and its potential connection to a Soviet Cold War-era structure, the Duga over-the-horizon radio antenna.

[10] Charlie Phillips of The Guardian gave the film four out of five stars, stating "Gracia succeeds brilliantly in delivering a chilling warning about where Putin and his spooks might go next, by giving Fedor full licence to act the biblical prophet" as "his fantasies collid[e] with real dangerous politics.

"[13] Daniel Walber of Nonfics also gave the film a positive review, summarizing it as "first and foremost a thrilling conspiracy theory documentary about Fedor Alexandrovich and his quest for the truth behind the Chernobyl nuclear disaster.

Club, Mike D'Angelo was unimpressed by the central thesis of the film, describing Alexandrovich's conspiracy theory as "in terms of plausibility [being] roughly on a par with 'George W. Bush allowed 3,000 Americans to be murdered by Al Qaeda ... so he could justify invading Iraq.'"

"[16] Similarly, Jeremy Mathews in his review for Paste Magazine writes: "As the filmmakers try to tie together the threads of the Chernobyl disaster, cold war paranoia and the modern conflict between Russia and Ukraine, [the documentary's] knots start to slip."