One Piece. Big Score 5. Only Forward! Books 13-15

Luffy's crew finally reaches the greatest ocean, the Grand Line! Their first stop in the treasure hunt is the town of Whiskey Peak on Cactus Island, where the pirates receive a very warm welcome. But everything is not as it seems at first glance: the pirate gang quickly discovers that all the residents of Whiskey Peak are actually members of a dangerous criminal organization called «Baroque Works», and they have their own plans for the brave travelers.
However, this is not the most unexpected discovery that awaits Luffy and his companions...