In Spain in 2011 a citizens’ movement known as Movimiento 15M (15 May Movement) was founded as a reaction to the banking crisis and in protest against unbridled neoliberalism. In 2014, this movement gave birth to the Podemos party which soon after in 2015 entered parliament as the third strongest party in the country. Fernando León de Aranoa enjoyed unrestricted access to party leaders Pablo Iglesias, Íñigo Errejón and their fellow campaigners as he followed on camera the party’s journey to become a new force in Spain’s traditional two-party system. Aranoa has distilled 500 hours of material into a film that provides incisive insights into the party’s internal crises and their efforts to put an end to an ossified Left-Right dichotomy and promote transparency with regard to declining poll ratings and accusations of corruption and populism. The resulting film is an impressively honest instruction manual describing the strategies and the media that were used to mobilise a whole new electorate within the space of just one year. The documentary also shows how it was possible to galvanise the momentum of street protests to pursue more contemporary means of political participation.