Twins Tanwen and Donna Evans are as different as chalk and cheese. Tanwen is pretty, a bubbly extrovert – but selfish and as sharp as a needle. Donna is plain, placid and shy, although warm-hearted. In 1924, when the girls are fourteen, their mother insists both become apprentices at The Cardiff Drapers. Tanwen is in great demand when she becomes the store model, but then Donna meets tall, handsome Dylan Wallis and falls in love. However, Tanwen sets her heart on Dylan with disastrous consequences for them all.