Let's forget what we know until now and let's rewrite the story from the beginning. What if Luffy didn't grow up alone but with his parents until the inevitable happens? What if he never met Ace and Sabo but instead he had a little sister? And finally what if Boa Hancock, her sister and the other prisoners of the world nobles wasn't liberated by Fisher Tiger but instead from Monkey. D. Garp?
Let's tag along with Luffy at his journey to become THE EMPEROR OF THE SEAS.
Luffy in this story will be stronger, smarter, perfect tactician and very dark.