All the main players have gathered in Whole Cake Island and In "One Piece" chapter 839, the Straw Hats may be able to sneak into Sanji's wedding and cause a huge ruckus. Meanwhile, Capone may just be the X-factor once the wedding ceremony begins.
In the previous chapter, everybody except Luffy is now on their way to the WCI where Sanji and Pudding's wedding will take place. The captain of the Straw Hat crew is currently battling one of Big Mom's elite soldiers in Cracker and even Gear Fourth is not enough to destroy the man with an 860 million bounty.
Fans over at Oro Jackson predict the events that may transpire in "One Piece" chapter 839 and they believe Luffy will eventually be able to get rid of Cracker, whose original body is very vulnerable to pain. His biscuit armor will be destroyed by a King Kong Gun, the same attack that ultimately put an end to Doflamingo.
Meanwhile, Nami and Pound are in complete control of Big Mom's pawns thanks to the vivre card Lola gave the navigator. Luffy catches on thanks to the flying capability of Gear Fourth. Pound will lead them to WCI without being detected as a token of gratitude and he aims to see his daughter, Chiffon.
Scene shifts to Brook and Pedro who arrives at the location of the Road Poneglyph. To their surprise, another one of Big Mom's commander is guarding the precious artifact. Fans suggest that this commander is Cashew, who also is the eater of the Nut-Nut No Mi.
Capone enters the room where Big Mom is and reports that he finished off Pekoms for betraying them. Upon hearing the report, Tamago furiously attacks Capone but they were stopped by Bobbin. Capone leaves the room with a villainous smirk on his face. Chapter ends with Chopper and Carrot finding the right mirror that leads to WCI.
Also, fans over at Reddit believe that Chiffon being the son of Pound will somehow lead to Capone being swayed to the Straw Hats' side. However, some think otherwise as Capone has shown his traitorous nature and during the wedding ceremony, he will make his move to assassinate the Yonkou. Here is a video review on "One Piece" chapter 838.