Two globetrotting microbiologists, Gloria Dominguez-Bello and Marty Blaser, race to save our vanishing microbes before it's too late. Why are the overuse of antibiotics, elective C-sections, and processed foods driving the destruction of our inner ecology? (It's happening even faster than climate change.) ‘The Invisible Extinction’ joins the scientists on this urgent quest from the USA to Venezuela, China, Israel, and Switzerland. At the same time, the film tells the stories of three patients in the USA and China who suffer from life-threatening diseases triggered by microbial loss. Are there experimental treatments that hold out hope for them? As the pandemic hits, Marty pivots to focus on how healing our gut microbiome with microbes may help protect us from the virus and future pandemics, while Gloria spearheads the creation of an international microbe vault to safeguard precious specimens.