Reeya Rai and her friend Finlay join their archaeologist parents as they excavate an ancient Portuguese trading ship discovered on the Skeleton Coast of Namibia. Her dad believes the Fiery Cross of Goa may have been among the artefacts in the shipwreck. This seven-foot-tall cross is covered with precious gems! Will Reeya and her friends find the treasured cross? And if they do, how will they move such a large artefact without rival archaeologist Dr Acker and his irksome daughter, Elsie, learning about it?.