The Straw Hats receive an invitation to an island resort on Omatsuri Island. They decide to go as a break from their adventures and to have some fun. But once they get there they're conned into participating in ridiculous challenges by the Baron of the island. Luffy is eager to prove that his crew are "pirates of pirates of pirates of pirates" and agree off the bat. But is it really worth it?
There's something strange about the Baron and the people of the island. And when the game starts events start to crumble the crew's camaraderie. And one by one, each member goes missing...
Chance meetings with a pirate family and a former pirate captain unravel a few of the mysteries on Omatsuri Island. Particularly one that interested Robin about Omatsuri Island's special flower ― the Lily Carnation.