Cool Fight

The Straw Hat Pirates discover that Punk Hazard is divided between burning and frozen regions. Nami, Sanji, Tony Tony Chopper, and Franky escape from a laboratory with a group of abnormally large children and the severed head of a samurai searching for his son. Meanwhile, Monkey D. Luffy's exploration party crosses into the frozen half of the island and encounters former pirate Higelyges Chadros and his centaur patrol.

The arrival of Smoker, Tashigi, and the G-5 Marines brings them into conflict with Trafalgar Law, who has become one of the Seven Warlords of the Sea. Law uses his powers to exchange the personalities of several Straw Hats and later Smoker and Tashigi, leaving the different groups struggling with unfamiliar bodies.

The island's ruler, Caesar Clown, orders his subordinates to recapture the children and eliminate the intruders. The children begin suffering severe withdrawal symptoms from the addictive candy used in Caesar's experiments, while the Yeti Cool Brothers ambush Brownbeard and abduct Nami. Luffy pursues them across the frozen wasteland and defeats their remaining attacker.