In the salty city of Water Seven, Luffy and his Straw Hat crew are fighting for their lives, and for their beloved caravel, the Merry Go! The crew starts to splinter when they hear their ship may be beyond repair…and the damage goes even further when their newest member, the mysterious Nico Robin, is blamed for the attempted assassination of Water Seven’s mayor! Is Nico Robin secretly an agent of darkness…or, even worse, a World Government operative?!