The particular takes place throughout the two yr earlier than the Straw Hats reunite on Sabody. Luffy is presently in Rusukaina coaching to get stronger to tackle the New World. Nevertheless the coaching is interrupted when Hancock's sisters, Marigold and Sandersonia, are kidnapped by the Byrnndi World, a pirate who was locked away on Degree 6 of Impel Down however escaped throughout Luffy's invasion to save lots of Ace, with a purpose to lure Hancock to him and use her as a hostage in opposition to the World Authorities as a consequence of her Shichibukai standing. Thus Luffy and Hancock head off to confront him and save Hancock's sisters.