In the United States, a year after Joe Biden's inauguration, around two-thirds of Republican voters believe his election was illegitimate, and the idea that the 2020 election was stolen from Donald Trump is now a defining issue of the Republican Party. Yet the story of how lies about election fraud made their way to the center of American politics has not been fully told. Plot to Overturn the Election traces the hidden sources of misinformation about the 2020 election, demonstrating how a handful of people have had an outsized impact on the current crisis of democratic legitimacy.