The Straw Hat crew salvages a treasure chest from a sinking wreck, inside which they find an old lady. To get the pirates to take her home, she promises them the treasure of a golden crown on her island: Mecha Island. Upon arrival, the crew is attacked by the lord of the island but he has a change of heart and decides to seek their help to solve the mystery of the Golden Crown. (Source: ANN, edited)

Nami betrays the Straw Hat crew and steals their ship and treasures, escaping to Arlong Park. Luffy and his crew follow her, only to come face to face with the infamous pirate Arlong, a ruthless fish-man who has taken over Nami's home island with force and Naval bribes. As opinions clash and the Straw Hats attempt to convince Nami to rejoin the team, her true motivation behind the deception will be revealed at last.

This is the 6th recap special of the Wano arc.

After Brook questions the origin of the Mini Merry name, Usopp and Chopper Tony Tony recall the adventures of the Straw Hat Crew's beloved ship, friend, and crew member—the Going Merry. Ussop abandons the crew for a fight over the Going Merry while Robin Nico leaves with the government's top assassin group, CP9. In order to bring the crew back together, Monkey D. Luffy and the remaining Straw Hats follow Robin to rescue her from the claws of the World Government.