Write a plot summary of a post apocalyptic pirate adventure story. Make sure that common themes are family and loyalty.
Billions had died in the great floods of 2048. And billions more in the years that followed. Hurricanes and tsunamis had become commonplace after the asteroid touched down in the heart of the Pacific two years later. 

The human race had to adapt fast. Most never had the chance, but those that did manage to build a few key cities on the water across the globe. 

What were once large hills and small mountains had now become island refugees used to care for and breed the few livestock that had managed to survive.

Our protagonist Agnes lives as a goat herder in one of these refuges but is forced to give up her stable lifestyle when the boat she is in is washed out to sea. On the brink of death, she is captured by pirates who nurse her back to health.

Agnes, though at first meek and unsure of herself, begins to blossom into a fine young pirate. She is intelligent and surprisingly cunning. She helps the crew grow in popularity with the common folk of the floating cities and increase their effectiveness as a crew, winning over the captain in the process.

But she has a decision to make when she receives word that her island home is under constant attack from other pirates and vagrants that want to claim the terra-firma of her kin. The captain agrees to buy her a small ship and put together a crew so that she can sail home to help her family as long as she continues to sail under his banner.

She and her friends set off for home to defend the land that is rightfully hers.