A’ leantainn air Sgeul-Rùin an Aon-Adharcaich, tha Tintin agus a charaidean a’ falbh dhan Charibbean, feuch ulaidh chaillte an spuinneadair, Ragam Ruadh, a lorg. Ged a tha iad a’ lorg an t-soithich fhèin air grunnd na mara, chan eil sgeul air càil luachmhor ach ciste anns a bheil seann làmh-sgrìobhainnean – ach ’s ann anntasan a tha am fios dìomhair iongantach!

Tintin and his friends head for the Caribbean in search of pirate Ragam Ruadh’s lost treasure, and the ship An Aon-Adharcaich. They find the sunken vessel, but the treasure has vanished. All that remains is a chest full of manuscripts — manuscripts which reveal surprising information!