Beware Her Scent! The Seventh One is Nico Robin!

Hina reports to Smoker that Bon Kurei's ship was sunk and his crew taken, yet the pirates escaped, a result Smoker seems quietly glad about. In the capital, Cobra finishes the address Vivi began, Chaka mourns at Pell's grave unable to believe he is gone, and Toto laughs in Yuba as one of the few who knows how much the crew did for the kingdom. The narrative drifts across the people and creatures the pirates met before revealing that Pell survived the explosion.

At sea the Marines hammer the Going Merry until Luffy, Zoro, and Sanji trip over heavy metal pipes Usopp had stored and decide to hurl them overboard. The pipes smash into the Marine ships and disable them, letting the crew flee. Soon after, the cabin door swings open to reveal Nico Robin, sending everyone who recognizes her into a panic.

A flashback returns to the collapsing temple, where Robin gave Cobra the poison antidote and admitted she had lied to Crocodile: the Poneglyph truly concerns Pluton, but she claimed it merely listed Arabasta's rulers, never meaning to deliver the weapon. Having spent twenty years chasing the Rio Poneglyph and the True History, she had lost hope when Luffy saved her against her wishes. Back in the present, she insists Luffy take responsibility for forcing her to live, and he simply welcomes her aboard. Nami is won over by jewels, Sanji by her being a woman, and Luffy, Usopp, and Chopper happily play with her powers, while Zoro alone stays wary.

Robin officially joins the crew in this closing chapter of the Arabasta Arc, and Potsun debuts alongside the Ori Ori no Mi Devil Fruit. The first ending theme, Memories, plays over scenes of Arabasta after the crew's departure, and the Pell sequences are anime exclusive. The Funimation dub states Zoro killed Daz Bonez, though later arcs show he survived. The entry aired in English regions as Stowaway.