A 30-year-old woman, overworked and stressed, passes out from exhaustion in front of her computer. She wakes up to find herself in an unfamiliar place, a young child with blonde hair and blue eyes instead of her old Hispanic, brown-skinned, brown-eyed self. Her mind is still her own, but her body is different, and she slowly realizes that she is inhabiting the body of young Petunia Evans, Lily Potter's older sister, in a different timeline. The world around her is unmistakably the magical world, with the familiar faces of Harry Potter, Severus Snape, and others.
As she navigates her new life, she discovers she has the ability to see fragments of the future and past-visions that seem to be both her own memories and glimpses of other timelines. Determined to fix the mistakes of her past and save the lives of those she loves, she begins to alter events and build relationships, particularly with Severus Snape. However, not everything goes as planned, and the path to redemption is filled with challenges, heartbreak, and sacrifices.