One Piece - episode 96 - 12 Jan, 2002

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 Alabasta. (Source: Wikipedia) Alabasta saga: Alabasta arc: (5/39)