Leviathan (season 1)

At the heart of the story are two teenagers from vastly different backgrounds. Prince Aleksander, a fugitive and would-be heir to the Austro-Hungarian throne, is on the run after his parents' assassination. Deryn Sharp, a daring British girl, disguises herself as a boy to serve in the British Air Service. Their destinies intertwine aboard the HMS Leviathan, a massive, living airship made from bioengineered beasts. Together, they embark on a globe-spanning adventure that challenges their beliefs about war, loyalty, and identity, and may alter the course of history itsel.