After graduating, identical twins Sinead and Sheila Fields decide to open their own hat shop. It's a small business but thanks to hard work and talent, they build up a loyal clientele. But tragedy strikes when Sheila disappears and is presumed dead. Months later, when there is a sighting of her sister, Sinead is filled with both hope and dread. Why would Sheila have deserted her twin? They had always told each other everything… hadn't they?