A young woman, born in the early 50's, is rendered ageless after her 21st birthday due to a genetic mutation. Her Hayflick Limit — the point at which cells begin to die — has been eliminated and given her the gift of biological immortality. After many solitary years on the run, evading capture by the government who wants to test her immunity to aging, she is successfully abducted by a grieving father who believes she is the link to save his dying daughter. Hayflick Limit asks the question: Can we live forever or do we want to live forever?