One Piece: Season 1, Episode 354

1 - 354: I Swear to Go See Him! Brook and the Cape of Promise

After learning that Brook's nakama is Laboon the whale, Luffy is dead-set on recruiting him. Before they prepare to take down Thriller Bark and regain their shadows, Sanji tells Chopper, Robin, and Franky the story of Laboon and the Twin Capes.