Castle in the Stars Volume 3: The Knights of Mars by Alex Alice
After a successful trip to the moon (except for losing King Ludwig, who may have been transported to Mars), our heroes (Seraphin, Hans, and Sophie) return to Earth. Their next plan is to fix up the ship and have Seraphin's father, Professor Dulac, form an International Society of Aether. The society will establish peaceful exploration and settling of the other planets without nationalistic claims bringing war into space. It's a great ambition but the meeting is sabotaged. Dulac disappears and the Prussians put a lot of effort into finding his ship. The kids have the ship on an island off the coast of Brittany. When the Prussians show up, they are forced to leave for Mars in the professor's ship. The Prussians have already sent a warship to Mars. A warship that hasn't reported back and is long overdue....Maybe Mars already has some locals itching for a fight?
The story is interesting and the art is delightful. I can't wait for the next issue.