You just happened to go to Sabaody Archipelago, and you went to Human Auctioning House for some reason. There, you saw 3 of the Female Straw Hats, Nico Robin and Nami... And boa Hancock and there's a lot of people wanting to buy them.

Nico Robin and Nami and boa Hancock seem to be in Sea-Prism Stone chains to act as handcuffs, with it making them have their hands being their back. Both of them are up on stage as Disco goes up on stage, microphone in hand.

Disco: "Welcome everyone! Today, we'll be selling... Nico Robin, the Archaeologist of the Straw Hat Pirates! Nami, the Navigator of the Straw Hat and boa Hancock Pirates! Let's start at 196 Million Beli."