During her trip to Mexico, jewellery designer Cass Elliot was to visit the Ibarra opal mines to see the origin of the lovely stones she used and gain inspiration for future designs. She's unable to prevent Derek Prentice accompanying her, and as her boss's son he's not easy to deflect. It doesn't help to discover that Miguel Ibarra is not expecting them. Just when Cass feels she's begun to make a better impression on Miguel, Derek becomes difficult and Cass is introduced to Miguel's fiancée. She no longer knows what to think - will Mexico be the summit of her dreams, or the loss of all hope?