Size zero became a fashion shorthand and a public health worry at the same time, and this film follows two women living on opposite sides of that line. Kellie is chasing the look, pushing her body toward extreme thinness in pursuit of an ideal she associates with success and attractiveness, and the film tracks what that pursuit costs her physically and emotionally. Victoria is naturally built at that size without trying, and her interviews turn the trend on its head: she describes being treated with suspicion, blamed for promoting an unhealthy standard she never chose, and picked apart by people who assume her body reflects a disorder rather than genetics. Interviews with both women, and with others who either want the size or resent being judged for having it, sit side by side without the film picking a villain. The result is less a verdict on size zero than a record of how one number on a label gets read as ambition, warning, and accusation depending on who is wearing it.