Catherine De Barra has just been named Prom Queen. She and her boyfriend Joseph are going to be the stars of the senior prom. Her school has a tradition that the prom queen must always wear white, and so Catherine has decided to go shopping for vintage wedding dresses. Her mother rescues old dresses from the Salvation Army and fixes them up so that they look new before selling them at her vintage shop. So, Catherine has a lot of options for her prize-winning gown.