Zoe doesn't have much of an afterlife. The only thing that's changed since the day she was shot and killed in a convenience store robbery is the number of holes in her chest, up from zero to one. She still attends her regular haunts, sends emails to her devastated and confused friends, and spends the rest of the time at her "grandparents" house avoiding being sat in by the cat. All that changes when Saul, her afterlife tech support guy, recruits her on a dangerous mission to search out and defeat a lost spirit seemingly bent on ending the world. On the way she encounters Death (literally), meets Saint Peter (Pete to his friends), forms strange alliances, and comes face to face with other ghosts that range from downright evil to inconveniently confused. A self-admitted slacker holds the key to preventing the apocalypse and saving her own soul in the process. And she thought the cat thing was a problem.