A deadly virus wipes out 99.9% of humanity. Kyle, a hedonistic ex-Silicon Valley CEO, lives alone in an empty Los Angeles until he meets Ella, a former urban planner determined to rebuild civilization. Though they hold opposing beliefs, they travel together across the desert to trace a mysterious distant radio signal. They discover a military radar outpost and Halcyon, a coastal settlement desperate for medical supplies, negotiate with armed Commander Mora, and resolve conflicts to build a communication network linking scattered survivors. They adopt a coyote named Friday and welcome Tammy, a survivor from Seattle. In the end, they set up their hub in a downtown Los Angeles skyscraper, connecting survivor groups far and wide. No longer lonely wanderers in the apocalypse, they work side by side to build a brand-new human community.
