The adventure story “Anna Swan” is about said heroine. She has a secret past. To fix her problems She is willingly and unwillingly tangeled up in some events.
The story starts in Anna Swan's office. Hans and Walter try to recruit her for a bounty mission. They want to collect the bounty on the notorious criminal John Hangar. Anna accepts the offer reluctantly. Hans and Walter have their own airship. All three of them travel north with it.