Crocodile steps in to save Ace from being executed. A hidden coated ship appears and takes the pirates in, much to the Marines' surprise and Sengoku's annoyance. Oars pulls the ship out of the water, allowing the pirates a safe pass through the plaza. Whitebeard enters the plaza, and unleashes a massive shock wave with his weapon. Whitebeard orders his pirates to save Ace and destroy the Marines. Knowing that Whitebeard is about to attack with all his forces, both Sengoku and Garp decide to fight. (thetvdb.com)