About the Sabaody Archipelago Arc
The Sabaody Archipelago Arc, also referred to as the Sabaody Arc, is the 19th story arc of the manga and anime One Piece, and the first story arc of the Summit War Saga.
The Straw Hat Pirates arrive at the final island of the Grand Line's first half, Sabaody Archipelago. While searching for a means to pass under the Red Line into the New World, they come into conflict with a deadly slave trading ring that sells to the World Nobles. Luffy and Zoro are labelled as two of the Eleven Supernovas, rookies of significant bounties who have simultaneously arrived at the archipelago. A chain reaction of events engulfs the archipelago in chaos, and the Straw Hats are faced with their greatest challenge yet.
In Mary Geoise, Fleet Admiral Sengoku chastises Bartholomew Kuma for not going after the Straw Hats like originally planned, while Vice Admiral Monkey D. Garp tells the leader of the Marines about how Luffy was able to get away from yet another government foe. Even so, Garp assures Sengoku that Luffy is not one who will go and spread the fact of Gecko Moria's defeat to others.
A few days after departing from the Florian Triangle and the ghost ship Thriller Bark, the Straw Hats continued to follow the Log Pose in the direction it had been pointing since it last set on Water 7. After making their way through bizarre weather and fighting massive Sea Kings, they finally arrive directly above the location indicated by the pose, Fish-Man Island. However, instead of finding the long-sought-after destination, the Straw Hats encounter another obstacle: the Red Line, the continent that encircles the Prime Meridian of the world. Having originally entered the Grand Line at Reverse Mountain on the other side of the Red Line, this means that the crew has traveled halfway around the Grand Line. With the continent blocking access into the New World and therefore to both Luffy's dream of becoming Pirate King and new crewmate Brook's dream of getting back to Reverse Mountain and reuniting with Laboon.