Life for former United Nations investigator Gerry Lane and his family seems content. Suddenly, the world is plagued by a mysterious infection turning whole human populations into rampaging mindless zombies. After barely escaping the chaos, Lane is persuaded to go on a mission to investigate this disease. What follows is a perilous trek around the world where Lane must brave horrific dangers and long odds to find answers before human civilization falls.

Born under unusual circumstances, Benjamin Button springs into being as an elderly man in a New Orleans nursing home and ages in reverse. Twelve years after his birth, he meets Daisy, a child who flits in and out of his life as she grows up to be a dancer. Though he has all sorts of unusual adventures over the course of his life, it is his relationship with Daisy, and the hope that they will come together at the right time, that drives Benjamin forward.