Monkey D. Luffia, or Luffy as she prefers to be called, is not one of your normal day to day girl OH no, she's one of a kind. she'd rather go on life threatening adventures than be confined in a place and being ordered around, she wont listen to any one meaning she's on the rebellious side
But that's the problem, you see, if she doesn't hide properly she could end up being a slave for one of those disgusting creatures that call themselves the world nobles or the celestial dragons. Why you may ask? well its because of her devil fruit, it being one of the rarest devil fruits, mythical zoan, doesn't help at all and just like almost all other fruits it has a certain perk other than super strength that everyone including the world government would do anything in order to get their power hungry hands on it.
And her poor brothers, Ace and Sabo, are going to have a nervous breakdown if they don't ensure their little 15 years old sister's safety all the while dragging along with them the pirate crew which they're part of-the Whitebeard pirates
And on goes luffy on her new adventure gathering new nakama and facing all types of enemies while trying to avoid getting caught by her brothers
And what about BOTH of her parents???