Russia's oligarch class rose out of the chaotic privatizations of the 1990s, and this BBC series tracks five of its most prominent figures as they build fortunes and then collide with Vladimir Putin's Kremlin. Interviews and behind-the-scenes access follow these men through the years leading up to 2005, charting how proximity to political power made their wealth possible and how that same power eventually turned against them. Two of the five have since fled Russia, wanted at home on criminal charges, and the series catches them running anti-Putin campaigns from exile, funding opposition efforts and giving interviews aimed squarely at the system that once made them rich. The contrast the series keeps returning to is the one between the oligarchs still operating inside Russia, working to stay useful to the Kremlin, and the exiles outside it, with nothing left to lose but money and platforms to spend it on. It is a study of what happens when personal fortune and state power stop needing each other.