Boris Berezovsky rose from Soviet-era mathematician to one of Russia's most powerful oligarchs, wielding influence over the Kremlin during the Yeltsin years before falling out with Vladimir Putin. This film traces his path from insider to exile, covering the business empire he built, the political connections that made him a kingmaker, and the falling-out that turned him into one of Putin's most vocal critics. It follows him to London, where he lived under constant threat, survived multiple assassination attempts, and became a wanted man in his home country. The film uses interviews and archival material to reconstruct how a man once close to the center of Russian power ended up isolated and hunted abroad. His death, found at his English home, closes out a life that moved from privatization deals and media control to poisoned associates, courtroom battles, and unanswered questions about who wanted him silenced and why.