i don’t want to set the world on fire (джен)

The dragons make desperate gamble, and hide their last egg as a cuckoo in a nest. A dragonling in human skin hidden among their enemies. Azula always was a bit strange.
or
In which Ozai is even worse than expected, the Gaang end up with two Fire royals instead of one (sort of), and sometimes a family is a banished prince, his sister, and her two giant fire-breathing lizard parents.