One Piece Omnibus volume 15 collects volume 43-45 in omnibus format and features story and art by Eiichiro Oda.

Luffy and his Straw Hat crew duke it out with CP9 in volume 15 of One Piece Omnibus. CP9’s goal? Abducting Nico Robin, the Straw Hats’ newest crewmember, in order to activate an ancient weapon called Pluton. But when the enemy accidentally initiates a dreaded “Buster Call” military maneuver, the island and everyone on it is slated for complete annihilation!