The Tiger is sent to oversee the excavation of a sunken ship. While busy to retrieve the gold tresure in it, he is constantly thwarted by international enemies. Among them is an old Nazi named Hans von Wunchendorf who dreams of world domination. He hides behind the codename "The Orchid" and needs the treasure to sustain a worldwide network of exiled former comrades. Once sanified by the gold his organisation plans to realise the endsieg after all.