The story consists of the following sagas and story arcs:
Saga 1: East Blue Saga (Chapters 1-10)
Arlong Park Arc (Chapters 1-6)
One Hundredth Follower Special! From the Bucket List of Evan Johnson! (posted between chapters 6 and 7)
Post-Arlong Park Interlude (Chapter 7)
Loguetown Arc (Chapters 8-9)
Reverse Mountain Arc (Chapter 10-11)
Saga 2: Alabasta Saga (Chapters 12-ongoing)
Whiskey Peak Arc (Chapters 12-15) (Chapter 15 overlaps with the next arc)
Omake: Divine Retribution (a non-canon omake posted between chapters 14 and 15, set on April Fool's Day)
Little Garden Arc (Chapters 15-18)
Omake: Epic Rap Battles of Fanfiction! (a non-canon omake posted between chapters 16 and 18) (a crossover with popular One Piece fanfic Twelve Red Lines, with a special cameo from Cross and Soundbite of This Bites!)
In Captivity Arc (Chapters 19-22) (set during the events of the Drum Kingdom and Alabasta Arcs)