Measles, a vaccine-preventable disease, was eliminated from the US in 2000, but the spread of online misinformation about vaccines has led to the return of this disease as the US battles to contain outbreaks. It has led to a public health crisis that has resulted in more than 800 cases in at least 20 states. This documentary provides an insight into how public health and officials and community members are battling on the the front lines of the measles crisis while waging online “info-wars” against the anti-vaccine movement’s misinformation.