Violet Unwin is convinced she is invisible. Overlooked by her adoptive family, her only solace is her uncle's costume shop. By day, she's an assistant no one remembers, but after hours, in the wonder of her imagination, she becomes explorer, warrior, queen. Devastated by news of the shop's imminent closure, Violet finds comfort in an unlikely companion, the ghostly figure of her namesake, the suffragette Vi Unwin.