Mary Holmes is an introverted middle-aged woman with a few suicidal tendencies. Things aren't going very well for Mary until the day she drives by a car accident and witnesses the tragic death of Stella, a young and rebellious woman in her early twenties. When Mary arrives home and finds Stella's severed finger on her windshield, her own attempts at a premature death are interrupted by what becomes her new morbid fixation and, eventually, friend.