One Piece (Series & Plot)

Theories under this category are related to the main plot and the series as a whole.

Top Theories/Speculations

  1. Theory Journey to Uranus :Winged Race
    4th Ancient Weapon -Devil fruits origins & Secret of Yami Yami no mi - by Dave
    Updated: Mar 28, 2017
  2. Theory Truth of Mariejois
    Darkness of World Govt - by Dave
    Updated: Jun 12, 2017
  3. Theory Elbaf, Enel and the Norse Mythology
    Connecting the Norse Mythology with the series (857+). - by Aloe Vera
    Updated: May 11, 2017
  4. Theory Big Mom's Strongest - The 'Sweet Commanders' POWERS AND IDENTITIES
    In depth theory talking about who i believe to be the 3 sweet commanders and their powers. - by Joy_Boy
    Updated: Oct 11, 2016
  5. Theory The Extraterrestrial Origins Of The Ancient Kingdom & Celestial Dragons Revealed (Part 1)
    I believe that the Ancient Kingdom & 20 Kings both originated from the moon, "Fairy Vearth". Part 1. - by Saffron Kaizoku
    Updated: Aug 19, 2016

View All Featured Theories & Speculations

  1. Theory Journey to Uranus :Winged Race

    4th Ancient Weapon -Devil fruits origins & Secret of Yami Yami no mi
  2. Theory Elbaf, Enel and the Norse Mythology

    Connecting the Norse Mythology with the series (857+).
  3. Theory Dragon, His fruit is...?

    What the evidence says concerning Dragon's fruit type
  4. Theory The Extraterrestrial Origins Of The Ancient Kingdom & Celestial Dragons Revealed (Part 1)

    I believe that the Ancient Kingdom & 20 Kings both originated from the moon, "Fairy Vearth". Part 1.
  1. Theories & speculations are being shown from all child categories.
  2. Ashura
    4/5, 2 ratings
  3. ashishbhule

    Theory the real one piece

    things that might change youe whole concept for one piece
    2/5, 1 rating
  4. CAMUNAI
    5/5, 16 ratings
  5. animelover421
    4.33333/5, 3 ratings
  6. TheGodEmperorBozz
    2.66667/5, 3 ratings
  7. Portgas D. Xatch
    3.4/5, 5 ratings
  8. L o g i a
    4.2/5, 5 ratings
    Updated:
    Jun 20, 2017
  9. Gray D. Thomas
    4/5, 1 rating
    Updated:
    Jun 20, 2017
  10. Aloe Vera

    Speculation Zou's Traitor - Who Could It Be?

    Proposing an original idea about how Jack got to Zou. (869+)
    5/5, 6 ratings
    Updated:
    Jun 18, 2017
  11. vikas
    4/5, 1 rating
    Updated:
    Jun 17, 2017
  12. Portgas D. Xatch
    1.75/5, 4 ratings
    Updated:
    Jun 16, 2017
  13. Awaken Fruit
    4/5, 1 rating
    Updated:
    Jun 15, 2017
  14. Big One
    3.8/5, 5 ratings
    Updated:
    Jun 15, 2017
  15. thabo Motaung
    2/5, 1 rating
    Updated:
    Jun 13, 2017
  16. Dave
    4.96/5, 25 ratings
    Updated:
    Jun 12, 2017
  17. Portgas D. Xatch

    Theory Sea King origin..100% crazy

    Who ever consumes this Devil Fruit can neither go to heaven or hell
    3.66667/5, 6 ratings
    Updated:
    Jun 12, 2017
  18. FelliTraydor

    Speculation Big Mom takes a public major loss this arc

    Taking into account all forshadowed elements to achieve it plus explanation why it needs to happen
    4.8/5, 5 ratings
    Updated:
    Jun 12, 2017
  19. vikas

    Speculation Future of Big Mom's arc.

    Will BM's story end right in WCI forever or will it continue in later arcs.
    0/5, 0 ratings
    Updated:
    Jun 9, 2017
  20. AlloftheOP

    Speculation Is There Another Way Off Whole Cake Island?

    gastino's mirror is broken but what about the other mirror.....
    2/5, 3 ratings
    Updated:
    Jun 8, 2017
  21. Kurisu
    4.33333/5, 3 ratings
    Updated:
    Jun 8, 2017
  22. AlloftheOP

    Theory HOW WILL BIG MOM BE DEFEATED?

    this theory is about the giants involvement in beating big mom
    0/5, 0 ratings
    Updated:
    Jun 8, 2017
  23. Tokiro Oumaga

    Speculation The Truth Comes Out - Big Mom's Memories

    Big Mom is bound to learn what happened to Mother Caramel sooner or later, but how?
    0/5, 0 ratings
    Updated:
    Jun 8, 2017
  24. Aizen_SoulKing
    3.8/5, 5 ratings
    Updated:
    Jun 4, 2017
  25. vikas
    3.5/5, 2 ratings
    Updated:
    Jun 4, 2017
  26. vikas

    Speculation TimeLine of BM and some unexplained Things about it.AK,ROGER.

    Here ill talk about some discrepancy which feels weird about the current and past LinLin.
    4/5, 2 ratings
    Updated:
    Jun 3, 2017
  27. OMaCC

    Speculation 9 Giant Kingdom's?

    Oda's reference of Norse Mythology, could Elbaph be 1 of 9 giant kingdoms?
    5/5, 1 rating
    Updated:
    Jun 2, 2017
  28. Muddasir Mohammed

    Theory Secret of the Devil fruit

    Eating the heart of a devil fruit user can give you their powers.
    4.375/5, 8 ratings
    Updated:
    Jun 1, 2017
  29. minions
    0/5, 0 ratings
    Updated:
    Jun 1, 2017
  30. ChuckTalens
    4/5, 1 rating
    Updated:
    Jun 1, 2017
  31. TheGodEmperorBozz

    Theory World Trees

    "World trees" connected to every races And The Devil Fruits tree
    3/5, 1 rating
    Updated:
    May 31, 2017
  32. Go_D_Garp

    Theory The future deaths of Loved Characters

    Law's sacrifice, shanks defeat, garps death, And rogers will
    0/5, 0 ratings
    Updated:
    May 31, 2017
  33. Go_D_Garp

    Theory Creation of devil fruits

    unknown races of the world and the moon people
    4/5, 2 ratings
    Updated:
    May 30, 2017
  34. cardboardspectator

    Theory Possibility of a Dragon Race and its Implications

    Now this is a CRAZY theory and is completely out there, yet somehow plausible imo
    2/5, 3 ratings
    Updated:
    May 30, 2017
  35. ThisGuy222

    Theory One Piece, Poneglyphs and the World Government

    Is there a good reason why the World Government doesn't want people to read the Poneglyphs?
    0/5, 0 ratings
    Updated:
    May 27, 2017
  36. Tokiro Oumaga

    Theory To the Moon and Back - Addressing Loose Ends

    My Moon Saga Theory had some holes, so let's try to patch them up
    4.6/5, 10 ratings
    Updated:
    May 27, 2017
  37. Wagram D. Auster Litz
    1.5/5, 2 ratings
    Updated:
    May 26, 2017
  38. DrPsycho
    3/5, 1 rating
    Updated:
    May 25, 2017
  39. vikas

    Speculation Will the rockets hit?

    Here ill talk briefly talk about how how the current event might open
    0/5, 0 ratings
    Updated:
    May 25, 2017
  40. PirateKing Monkey D Luffy
    4.5/5, 2 ratings
    Updated:
    May 25, 2017
  41. Diabolique
    0/5, 0 ratings
    Updated:
    May 25, 2017