Vor der Flagge des Vaterlands

The narrative centers on Thomas Roch, a French inventor who has created a powerful explosive but faces rejection from various states. After a breakdown, he is confined in a North Carolina sanatorium, where he is cared for by Simon Hart, a French engineer in disguise. Their lives take a turn when the scheming Count d'Artigas orchestrates their abduction during a visit. As Simon uncovers the mystery of the Count's ship's movement, the story unfolds further on the enigmatic island of Back Cup in the Bermuda region.