One Piece: Unlimited Cruise Episode 1 - The Treasure Beneath the Waves

One Piece: Unlimited Cruise Episode 1 - The Treasure Beneath The Waves (????? ????????????????1 ???????, Wan P?su: Anrimiteddo Kur?zu Epis?do Wan - Nami ni Yureru Hih?) is the first part of two episodes which act as parts of a single story. (wikipedia.org)