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 Ancient Weapons: Astronomy, The real source
    Moons of Pluto, Uranus and Neptune are the inspiration for Ancient Weapons - by CAMUNAI
    Updated: Aug 31, 2017
  2. Theory Journey to Uranus :Winged Race
    4th Ancient Weapon -Devil fruits origins & Secret of Yami Yami no mi - by Dave
    Updated: Mar 28, 2017
  3. Theory Fairy chess in Totland's arc and what could await us (plus Harry potter and Alice)
    Conections between chess games,the current and future arc - by CAMUNAI
    Updated: Jul 15, 2017
  4. Theory Elbaf, Enel and the Norse Mythology
    Connecting the Norse Mythology with the series (857+). - by Aloe Vera
    Updated: May 11, 2017
  5. Theory Will of D -2 :Truth of Mariejois
    Darkness of World Govt - by Dave
    Updated: Jun 12, 2017

View All Featured Theories & Speculations

  1. Speculation Nami's connection to Romanian lore and a bigger role to play in Wano

    Nami and her abilities may be inspired from Solomonars, Romanian weather wizards.
  2. Theory The Marines interference foreshadowed and built up

    Punk Hazard foreshadowing // Kiku, Zoro, Hiyori and Tashigi // Law's deathflag // Luffy vs Sentomaru
  3. Theory Barbarossa and Shanks The Emperors

    The commonality between Emperor Barbarossa and Emperor Shanks.
  1. Theories & speculations are being shown from all child categories.
  2. shawnfrostmax
    4/5, 1 rating
    Updated:
    Dec 7, 2018
  3. Man of Theory
    3.5/5, 2 ratings
    Updated:
    Dec 4, 2018
  4. Mr. Mister
    2.5/5, 2 ratings
    Updated:
    Dec 3, 2018
  5. King of beasts kaido

    Theory Elbalf : will take a Major Dive into Norse Mythology..Odin?Thor? Im? dragon & the Great Kingdom

    Did Im-Sama start Ragnarok? did Elbalf ally with the world Government to fight The Great Kingdom??
    4.7/5, 10 ratings
    Updated:
    Nov 29, 2018
  6. Donal D. Trump
    5/5, 4 ratings
    Updated:
    Nov 28, 2018
  7. Theo Ries

    Theory Mystery of the Missing Moons

    How is the Plot Connected to the Planet and Its Moons?
    4.86957/5, 23 ratings
    Updated:
    Nov 25, 2018
  8. flappy
    1/5, 2 ratings
    Updated:
    Nov 25, 2018
  9. vikas
    4.33333/5, 6 ratings
    Updated:
    Nov 26, 2018
  10. Erkan12
    2.66667/5, 3 ratings
    Updated:
    Nov 24, 2018
  11. Jarettz

    Theory Hiyori Revealed

    Hiyori has been infront of us since the beginning
    3/5, 3 ratings
    Updated:
    Nov 21, 2018
  12. Ashurockerz

    Speculation Shanks was a World Government Spy

    Shanks was a world government spy before joining the Roger Pirates
    1.66667/5, 3 ratings
    Updated:
    Nov 19, 2018
  13. I Ge D. Sabda

    Speculation Heroine of One Piece

    This story began to show us a possibility of heroine
    2.5/5, 2 ratings
    Updated:
    Nov 16, 2018
  14. King of beasts kaido

    Speculation The Thing Kaido Captured is a Member of the "D" Clan and the master of CoA Haki

    Did Kaido just Luffy into the cage next the one that will help luffy master the CoA haki
    3.25/5, 4 ratings
    Updated:
    Nov 14, 2018
  15. Rej

    Theory Wano will be the target for the "Great Cleansing"!

    Let's tie EVERYTHING together. 2 Weeks, Ohara, Reverie, Big Mom, Wano and Elbaf!
    4.63158/5, 19 ratings
    Updated:
    Nov 12, 2018
  16. Sniper king ussop

    Speculation Kaido created the storm around wano

    Is it kaido who created that storm that makes it nearly impossible to land in wano ?
    5/5, 1 rating
    Updated:
    Nov 11, 2018
  17. Babyswagmonster
    4.5/5, 2 ratings
    Updated:
    Nov 10, 2018
  18. Diabolique
    3.14286/5, 7 ratings
    Updated:
    Nov 10, 2018
  19. Sniper king ussop
    1.33333/5, 3 ratings
    Updated:
    Nov 9, 2018
  20. roronoasheed
    2.33333/5, 6 ratings
    Updated:
    Nov 9, 2018
  21. Treemi95
    1/5, 3 ratings
    Updated:
    Nov 9, 2018
  22. crate
    3.45455/5, 11 ratings
    Updated:
    Nov 9, 2018
  23. Quenton zeferos
    0/5, 0 ratings
    Updated:
    Nov 8, 2018
  24. Critical Mindset
    5/5, 4 ratings
    Updated:
    Nov 6, 2018
  25. RabbidRabbit
    3.6/5, 5 ratings
    Updated:
    Nov 5, 2018
  26. BKumafangirl67
    5/5, 2 ratings
    Updated:
    Nov 3, 2018
  27. Monkey D. Steven
    1.75/5, 4 ratings
    Updated:
    Nov 3, 2018
  28. Linc

    Theory How the Wano War might unfold and participants

    Luffy is going to take Ace's position as a prisoner in the upcoming war
    5/5, 1 rating
    Updated:
    Nov 2, 2018
  29. MESS
    0/5, 0 ratings
    Updated:
    Nov 2, 2018
  30. Hakani

    Speculation Yonko's strength

    yonkos at 1v1 and full army/alliance force
    0/5, 0 ratings
    Updated:
    Nov 1, 2018
  31. j011y_Roger

    Speculation Kaido plays Hawkin's Childish Game!

    Speculation into 922 and how Hawkin's is holding all the cards.
    3/5, 1 rating
    Updated:
    Oct 29, 2018
  32. Saikō no Kenshi
    4/5, 1 rating
    Updated:
    Oct 28, 2018
  33. Sniper king ussop

    Theory Luffy saw the destruction of oden castle

    Luffy saw the castle being destroyed and that is why he attacked.
    3.8/5, 5 ratings
    Updated:
    Oct 28, 2018
  34. Saikō no Kenshi
    4.25/5, 4 ratings
    Updated:
    Oct 27, 2018
  35. DiezDrake
    3.66667/5, 6 ratings
    Updated:
    Oct 26, 2018
  36. PocketGeek

    Speculation Luffy´s shortened lifespan in Wano

    Luffy´s problem with his lifespan and the stress on his body might play a major role in Wano
    0/5, 0 ratings
    Updated:
    Oct 25, 2018
  37. BKumafangirl67
    5/5, 2 ratings
    Updated:
    May 31, 2019
  38. j011y_Roger

    Speculation Save Shutenmaru

    Could Shutenmaru be the lynch pin to the pilgrimage to free Kaido's Captives
    4.5/5, 2 ratings
    Updated:
    Oct 23, 2018
  39. BambaDevil
    4.5/5, 2 ratings
    Updated:
    Oct 22, 2018
  40. Saikō no Kenshi
    4.42857/5, 7 ratings
    Updated:
    Oct 21, 2018
  41. Saikō no Kenshi
    1/5, 6 ratings
    Updated:
    Oct 19, 2018
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