One Piece: Episode of Nami - Tears of a Navigator and the Bonds of FriendsEpisode 1

Synopsis

Nami betrays the Straw Hat crew and steals their ship and treasures, escaping to Arlong Park. Luffy and his crew follow her, only to come face to face with the infamous pirate Arlong, a ruthless fish-man who has taken over Nami's home island with force and Naval bribes. As opinions clash and the Straw Hats attempt to convince Nami to rejoin the team, her true motivation behind the deception will be revealed at last.