I need some ideas for my new fanon. I have one that I think I'm going to call "Daughter of the Moon". It's set in modern day, and it's about a girl named Kaitlyn who's a waterbender. Yue, the moon spirit, and La, the ocean spirit, have a baby. She is a mortal girl and looks normal, and is adopted by normal people who don't know about her abilities. She doesn't know that she is special. She just knows that every full moon, she goes outside and swims around. Her older brother, Seth, keeps her secret from their parents. I need a plotline! Any ideas?