Aside from shedding her older sister in a hit-and-run, 17-year-old Tia Scott has had a fairly regular life. That's till she begins exhibiting unusual signs and realizes she's caught a virus that is slowly turning her right into a zombie. Determined to discover a remedy, the one particular person she trusts is a loner in school, Flynn, a self-proclaimed skilled in all issues paranormal. However Tia's life will get even worse when a pal of her boyfriend, Connor, is murdered. Tia is aware of that Connor's pal Jason is concerned however going to the cops makes her a goal and with the clock ticking till Tia's too far gone to get better, she enlists the assistance of her mom Kate and a reclusive physician in hopes they're going to cease the illness earlier than Jason finds out she's the snitch.