Alex Duncan grew up embarrassed by her father's extreme prepper lifestyle — until a zombie plague hits Las Vegas and everything he taught her is the only thing keeping her children alive. The Sundown Series follows three Duncan siblings across six books, each narrator facing a different corner of the apocalypse while converging on the family's Montana compound.

Alex Duncan is practical, fierce, and driven by maternal instinct — a leader who didn't choose the role but was built for it. Her siblings Max and Rafe offer complementary perspectives: Max is emotionally turbulent and driven by a secret (her daughter's father), Rafe is stoic and mission-focused. Together they make for a rich ensemble protagonist.

What begins as a survival race across collapsing American cities evolves into a family saga about loss, leadership, and the darkness ordinary people are capable of in extraordinary circumstances. The government's secret role in the plague adds a conspiracy layer that deepens with each book, and the series ends with a hard-won homecoming that costs the Duncans nearly everything.