High school can feel like an eternity. For some students at Split River High, it literally is. Maddie, a 16-year-old girl, is newly deceased and finds herself trapped in afterlife-limbo at her high school, where she discovers that she's stuck with those who have also died in the school over the past 100 years. For some reason she's the only one who can still communicate with the living, so she uses her new-found abilities to help investigate her own murder.