Tintin and his faithful dog, Tarrie, are on a quest to track down a bunch of international money forgers. Amongst them is Dr Müller, soon to be one of Tintin’s most ruthless enemies. Escaping with his life after being shot, Tintin faces further close calls as he unearths clues which lead him to the furthermost isles of Scotland. This is where he discovers the dark legend of the Hairy Etin monster, incarcerated within the ruins of Corbiecraig Castle on the Derk Isle. Ignoring any monstrous legends, Tintin and Tarrie take a boat to the island to challenge the legend that lies ahead.