Luffy fights Blackbeard as a grudge match for them killing shanks
Cross guild takes over the WG in the mean time.
Luffy lands on raftel sees that the one piece isn’t here but the rip Poneglyph is which tells what the one piece is.
Poneglyph explains the one piece is in Mariejoa castle. Luffy decides to go and take it (Rayleighs quote about them coming to a different conclusion and Doffy saying there’s a treasure in Mariejoa that if revealed will turn the world on its head)
Luffy takes his victory lap and amassed his grand fleet they all attack Mariejoa