The community of San Lupo grapples with a new strain of a deadly virus, threatening their survival. Ish, haunted by his son Joey's illness and visions of Charlie, realizes that humanity's future lies beyond books. As tensions rise, he discovers Joey's secret project—building a radio to connect with other survivors. The episode culminates in a desperate fight for hope and unity amidst despair, emphasizing resilience in the face of adversity.