Ace decides to travel with the Straw Hats, as he is hunting for a man known as Blackbeard. The group arrives first at the 'Green City' of Erumalu only to find it abandoned to the desert. Vivi and Nami explain what Dance Powder is and what it has done to Arabasta.

Nami and Vivi found themselves an easier way to travel in the desert and leave all men behind. While trying to catch up with them, Ace gets lost. Luffy and the rest of the gang find the Desert Pirates, and Vivi meets a figure from her past.