One Piece: Season 1, Episode 387

1 - 387: The Fated Reunion! Save the Imprisoned Fish-man

Duval bears a grudge against one of the Straw Hats, but it is not known which one. When the Straw Hats reach the hideout, they discover that Hacchin is none other than the octopus Fishman Hatchan, formerly of Arlong's crew. Although reluctant to save him with this new knowledge, Keimi convinces the crew to go through with it. However, everything was a trap set by Duval, and the Straw Hats are ambushed by the Flying Fish Riders.