It's been a while since we've seen Castalia, but she's back. She's still in love with Balthazar, and she can't wait to tell him about it. But first, she wants to know why she didn't cut her hair when she was younger. Turns out it's because it helped her remember her family's secrets. Castalia's a spinster, after all. She doesn't want to be the last woman in the world to die. She wants to be married to the last man on earth. She also wants to marry the last pirate on earth, because she thinks that's the only way she'll ever be able to be a pirate. And she wants her sister to know that she'd never want to become a pirate, since she thinks her father would never want her to be one. But Castalia still wants to see the world with her, so she decides to plant a little flag on the island of Kane Island.