Once a legendary fighter aboard Roger the Pirate King's ship, Douglas Barrett has been dormant in the deep-sea cage of Impel Down for many years. An unexpected commotion caused this strong man, who was dubbed the "Descendant of the Devil," to break through his shackles and travel to the East China Sea with his persistence for peak combat power and unfinished ambition.
Here, he met the straw hat boy Luffy who shouted "I want to become the Pirate King". Pure faith and fearless courage unexpectedly touched Barrett's frozen heart. Different from the aloof and lonely life in the past, he chose to join this simple Straw Hat pirate ship and became Luffy's second crew member and irreplaceable vice-captain.
With the heritage and top combat power of the Roger Pirates, what kind of transformation will Barrett bring to the fledgling Straw Hats? Under his protection and guidance, what kind of storms will the little pirates in the East China Sea create in advance? From the East China Sea to the Grand Route, from fighting against offshore overlords to challenging the Shichibukai, Barrett and Luffy join hands to break through numerous obstacles as the core of the duo, heading towards the throne of the Pirate King, embarking on a passionate adventure destined to rewrite the era!
