At a retrospective on the work of acclaimed photographer Kathy Moran, aspiring novelist Stacey Kim is fascinated by the exhibition's centerpiece: the famous Woman with a Gun, which launched the artist's career. Shot from behind, the enigmatic black-and-white image depicts a woman in a wedding dress standing on the shore, facing the sea. But this is no serene, romantic portrait. Behind her back, she holds a six-shooter.
The picture captures Stacey's imagination and raises compelling questions: Who is this woman? And why does she have a gun? Obsessed with finding answers, Stacey soon discovers the identity of the woman: a suspect in an unsolved ten-year-old murder investigation. Convinced that proof of the woman's guilt, or innocence, is somehow connected to the photograph, Stacey embarks on a relentless investigation.
Drawn deeper into the case, Stacey discovers that the one person who may know the whole story—Kathy Moran—isn't talking. Stacey must find a way to get to the reclusive photographer and make her tell the truth about what happened that fateful day.