Set against the backdrop of the 2009 economic crisis, Brianza follows Giorgio Farina, the heir to a historic gun shop who faces ruin after a failed luxury investment in Switzerland. Desperate to save his social standing, he enters into a dangerous partnership with eccentric businessman Alberto Fumagalli. What begins as an illicit scheme quickly plunges Giorgio into a downward spiral of debt, crime, and peril, threatening his family, his reputation, and his life.