Mad scientist, doctor Ten Brinken artificially inseminates a prostitute with a dead man's semen. The resulting child grows up to be a beautiful, evil woman who turns against her creator.

Two French spies, Baron d’Aubigny and Clemence de Montignon, blackmail German engineer Günther Ellinghaus with his gambling debts into handing over his construction plans for the new Ikarus engine. He flees to New York and works as a waiter. When World War I breaks, he signs on as a fireman on a Dutch ship and returns to Europe. He becomes a fighter pilot in Germany and faces the former spies as his enemies. After an emergency landing he is taken into their headquarters. He escapes an attempted murder and fights his enemies in an air battle. Both of them survive and after the war Ellinghaus offers them his hand in reconciliation.

Officials and royalty flock to a popular tavern on the Polish-Russian border,the lady owner scours the visitors for a prospect to marry off to her unwed daughter.

The short story focuses on two anecdotal episodes about the Prussian King Frederick II. In the first episode, the monarch meets an invalid. In the second episode, Baron Warkotsch's servant informs the king that Kappel's master is committing treason against the Prussian king, which puts Frederick's life in grave danger.