Episode 66

"A Serious Fight! Luffy vs Zoro: The Baffling Duel!" is the 66th episode of One Piece.

Short Summary
Luffy, without knowing that the town is full of bounty hunters, engages in a battle with Zoro, after Zoro attacked the kind people of this town. Meanwhile, Mr. 5 and Miss Valentine, two Officer Agents, head for Princess Vivi, after learning that she discovered the head of the organization's true name.