After losing two nakamas, Nami doubles the bet and the last round of the Davy Back fight starts. Luffy and Foxy battle in the Sexy Foxy ship, where the evil Foxy's beams are putting Luffy in a hurry.
Foxy carries Luffy into his ship where he has the advantage. Several rooms with dangerous weapons are waiting for him, and the Noro Noro beam keeps our hero frozen.
Luffy defeats Foxy using a piece of mirror that got stuck in his afro and wins the Davy Back Fight. 500 nakamas come into his crew among which he gets Robin and Chopper back. Old Oni meets his grandson the digger.
After leaving Long Ring Long Land the crew drops the anchor in an unknown island to spend the night. They are visited by a mysterious Fishwoman who plays a song, and everybody wakes up without their memories, except Robin.
Robin is the only one who has her memories untouched and she must keep the crew together. Nami and Zoro leave on their own but the archaeologist manages to convince the rest. The mysterious guilty boy appears.
Luffy and his crew confronts the Mysterious Boy but he escapes after giving Luffy's memories back. The crew goes after his lost friends but the Boy has some plans for Zoro. Robin begins to unravel the mystery.
Robin discovers the secret of the memories-eating monster and goes after him with Sanji, Chopper, Usopp, Luffy and Nami, whose gold Sanji is carrying. Zoro comes looking for Luffy and the battle begins.
The Seahorse and the boy confront the crew but Sanji kick's the boy's ass just when he is trying to attack Nami and Usopp. Memories come back and the battle begins. Luffy is the only one who can fight without memories.
The Straw Hat Crew find Foxy in the sea and help him get to his ship. Luffy fights against the pirates that are trying to steal the Sexy Foxy and defeats them, just to discover that Foxy has been planning treason.
After being defeated again, Foxy keeps trying to disturb and the crew surprises him using a crab robot. Luffy and friends land in a new island where they find a powerful marine leader, Aokiji.
"The Straw Hats encounter a laid-back but formidable Marine admiral who showcases a chilling power. As tensions rise, Luffy, Sanji, and Zoro step in, but the battle quickly proves to be an uphill struggle.
Luffy tells the crew to protect Robin and leave him alone with Aokiji. Ice and Rubber face each other but the Straw Hat captain is defeated. Sanji and Zoro save him and the Going Merry continues it's voyage.
The Straw Hat Crew arrives to a Blue Station where they meet the great Sea Train. Old guard Kokoro tells them about Water 7 and they sail to the island looking for a carpenter to repair the Going Merry.
Luffy, Nami and Usopp go with the gold looking for exchange and the shipyards where they can repair their ship. Chopper finally finds a library but Robin disappears. Zoro receives some visits in the Going Merry.
Zoro gets rid of the Franky Family, while Sanji gets lost in the city and watches Robin disappear with a masked man. Luffy, Nami and Usopp meet carpenter Kaku and Mayor Iceberg. The Franky Family steals their money.
The Franky Family is still after the money while Zoro talks with Kaku about the Going Merry. When Kaku returns to the shipyard with the terrible news, Luffy and Nami realizes that Usopp is gone.
Usopp is kidnapped by the Franky Family. Nami and Luffy realize and Luffy goes after him. The rest of the crew is receiving the new about Merry. Usopp confront the burglars at the Franky House.
The Straw Hat Crew arrives to the Franky House looking for their friend and they easily beat the Franky Famlily, but their boss has already escaped with the money. Chopper heal Usopp while Luffy makes a decision.
Usopp is healed by Chopper and he asks for the Going Merry's future. A worrying quarrel begins when Luffy tells him his decision. He and Usopp argue until the Lier leaves the ship and asks Luffy for a duel.
The most terrible fight begins and Usopp has prepared some tricks to fool Luffy, but the strength of the captain is clear. Memories go back and forth while even Merry is crying.
The crew has moved to a hotel when Nami arrives with the news about Iceburg. She and Luffy go to find out more while Sanji and Chopper keep tracing Robin. In dock 1, Franki appears looking for Luffy.
Franky wants to fight Luffy but in the meantime Iceburg awakes and tell the carpenters what he saw. The Galle-La five go after Luffy and they interrupt the fight. Aqua Laguna is coming.
Franky interferes in the battle and Nami and Luffy escape. The city is looking for the Straw Hat Pirates when Luffy rushes into Iceburg's residence, trying to find the truth. Iceburg confirms Robin's guilt.
The crew is spread throughout the city, Sanji and Chopper go back to the ship to warn Usopp about the Aqua Laguna. Chopper smells Robin and she declares her farewell.
The crew decides to go after Robin and determine once and for all whether she is their nakama or not. People of Water 7 gather in Iceburg's residence to protect him during the arrival of Aqua Laguna.
Night has fallen and the Galley-La soldiers are waiting. CP9 spies appear while the Straw Hat Crew is patiently waiting hidden in a tree. Iceburg tries to protect his treasure, but it's too late. Battle has began.
Luffy decides to start moving but he gets stuck between two buildings. The rest of the crew makes it to the back garden where they are forced to beat the shipwrights. CP9's identities are unmasked in front of Iceburg's eyes.
CP9 members untangle Iceburg's plan to maintain Pluton's whereabouts in secret and decide to go after Franky. Meanwhile, both Luffy and Pauly, and Nami, Zoro and Chopper arrive to Iceburg's room.
The CP9 members show their true strength when the Straw Hat Pirates decide to attack. Neither Luffy nor Zoro manage to beat them. There are 2 minutes left for the huge fire and Robin escapes once again.
The Galley-La company main building is set on fire and the CP9 members go after Franky, who is trying to make friends with Usopp. Aqua Laguna has arrived and both Luffy and Zoro have been thrown to the water.
Franky shows Usopp how inevitable the perish of the Going Merry is and the mysteries about the man who repaired the ship in Skypeia are revealed. The CP9 agents arrive to Franky's hidden warehouse.
CP9 agents discover an antique room in the warehouse. Memories awake while Franky tries to stop them before everything is destroyed: Tom's prosecution and the Umi Ressha's first trip.
Goverment CP5 agent Spandam frames Tom so he can freely investigate him and find Pluton's blueprints. The Fishman hands the plans to his apprentices and the beginning of Iceburg and Franky's enmity is revealed.
Tom decides not to fight against the government and accepts to go to Eines Lobby in exchange of the exoneration of Iceburg and Franky. Franky can't bear the guilt and attacks Spandam, who is now CP9 boss.
The CP9 agents take Frany and Usopp and prepare the last-minute departure of the Umi Ressha. Meanwhile, Chopper rescues Pauly and Iceburg, who tells Nami the truth about Robin. Sanji's plan comes into action.
Chopper goes to search the city looking for Luffy and Zoro while Nami rushes to the train station. The Umi Ressha departs earlier than expected due to the Aqua Laguna and Sanji decides to sneak in.
Sanji is spotted by the agents in the last wagon and forced to fight. The Aqua Laguna is arriving and Pauly prevents Nami from drowning. She goes looking for Luffy and find him stuck between two walls.
