Narrated by Elle Fanning, One Click explores how a single click on the internet can change your life forever. Season 1 tells the story of DNP (2,4-dinitrophenol), an explosive chemical originally used in WWI-era munitions factories that is now being sold on the internet as a diet pill leaving hundreds dead in its wake. Together with journalist Jessica Wapner, Elle Fanning traces the history of DNP and asks, why (despite the perils) have so many turned to DNP and what does it say about the health of our society?