Captain Morgan arc: Chapters 1-7, Episodes 1-3:
Influenced by Shanks, Luffy starts his journey to become pirate king.
Soon he meets a sea monster and a pirate named Alvida but defeats them
both. Then he meets a boy named Koby who wants to be a Marine. They
reach a town controlled by the corrupt Marine Captain, Axe-Hand Morgan,
where bounty hunter Roronoa Zoro is being held for attacking Morgan's
son.
Buggy the Clown arc: Chapters 8-21, Episodes 4-8:
Luffy and Zoro, who has become his first crewmember, reach a town under
control by the pirate Buggy and they meet a thief named Nami, who hates
pirates.
Captain Kuro arc: Chapters 22-41, Episodes 9-18:
After Nami forms a partnership with the two as their navigator (though
she is quick to point out that she is not a crewmate), they reach an
island and search for a ship to use. There, they encounter a liar named
Usopp, who too has ties to Shanks' pirate crew. When a devious plot is
revealed, Usopp's courage is put to the test and the Straw Hats have to
fend off a pirate attack.
Baratie arc: Chapters 42-68, Episodes 19-30:
Usopp joins the crew as a sniper and the Straw Hats go to the sea
restaurant, the Baratie, in search of a cook for the ship. However, the
restaurant comes under attack by the powerful Don Krieg, who has
returned from the Grand Line in ruins and wants to use the Baratie to
go back.
Arlong arc: Chapters 69-95, Episodes 31-45:
With Sanji from the Baratie joining the crew and Nami stealing the
ship, the Straw Hats follow after her to an island under the control of
the fish-man pirate Arlong. Nami reveals that she is a member of the
Arlong Pirates and simply helped the Straw Hats so she could take their
gold later. But why would she follow a man like Arlong?
Buggy Side story: Anime Only, Episodes 46-47:
Nami officially joins the crew. Meanwhile in the East Blue, Buggy is
searching for his body parts when he meets Lady Alvida. Lady Alvida and
Buggy plan to destroy Luffy. This is based off of a Chapter Title Page
Mini-Arc. This arc was skipped in the 4KIDS dub.
Loguetown arc: Chapters 96-100, Episodes 48-53:
The crew heads to the last town before the entrance to the Grand
Line--Loguetown, the place where Gold Roger was both born and executed.
Not only will they have to deal with a powerful Marine captain, but
also returning enemies looking for revenge.
Warship Island arc: Anime Only, Episodes 54-61:
After the crew leaves Loguetown, they meet a girl named Apis. Apis
takes them to a thousand year old dragon. The crew needs to take the
dragon to its home, the island called Lost Island. This arc was skipped
in the 4Kids dub.
[edit]Baroque Works Saga
Reverse Mountain arc: Chapters 101-105, Episodes 62-63:
The Strawhat crew is at the gate to the Grand Line; known as the Twin
Capes island. But they encounter an obstacle as soon as they get in--a
giant whale that swallows the entire ship. A lot of this arc was
skipped in the 4kids dub.
Whiskey Peak arc: Chapters 106-114, Episodes 64-67:
Led by the mysterious Mr. 9 and Ms. Wednesday, the Straw Hats go to
Whiskey Peak, where the townspeople immediately start a party to
celebrate their arrival. But there is more to this town than there
appears.
Coby/Helmeppo Side story: Anime Only, Episodes 68-69:
The crew escapes from Whiskey Peak and they have a mission to deliver
Princess Vivi to Alabasta and to stop Sir Crocodile. Meanwhile in the
East Blue, Coby and Helmeppo get selected by Vice Admiral Garp to go to
the Marine Headquarters. This is based off of a Chapter Title Page
Mini-Arc. This arc was skipped in the 4Kids dub.
Little Garden arc: Chapters 115-129, Episodes 70-77:
The crew lands on Little Garden, a huge island that is still stuck in
the prehistoric era. However, there are more than dinosaurs on this
island, as they find when they encounter two giants that have been
dueling for over 100 years and four high-ranking Baroque Works members.
This arc was skipped in the 4Kids dub.
Drum Island arc: Chapters 130-153, Episodes 78-91, Movie 9:
When Nami catches a fatal illness, the crew is forced to stop at Drum
Island, a kingless country that is trying to establish a new
government. As they find out, due to the actions of the previous king,
Wapol, there is only one doctor left--a "witch" named Dr. Kureha who
lives at the top of a mountain. Luffy and Sanji must journey up the
mountain, but meanwhile the exiled King Wapol returns to reclaim his
country. Here, they met Tony Tony Chopper, the reindeer doctor who
helped cure their illness and fought with them against Wapol's men.
Alabasta arc: Chapters 154-216, Episodes 92-130, Movie 8:
The Straw Hats, with Kureha's assistant Tony Tony Chopper as a new
addition, and Vivi finally arrive at Alabasta, which is on the verge of
civil war. Vivi must reach the rebel army and tell them the real cause
behind the war, but Crocodile, aka Mr. 0, leader of Baroque Works and
one of the Shichibukai, won't just stand by and watch.
[edit]Skypiea Saga
Post-Alabasta arc: Anime Only, Episodes 131-135:
The crew tearfully leaves Vivi behind and Nico Robin (Miss.All-Sunday)
joins Luffy's crew. This arc chronicles the various misadventures the
crew has as their journey. All but one episode was skipped in the 4Kids
dub.
Goat Island arc: Anime Only, Episodes 136-138:
After escaping from several Marine ships, the Straw Hats land on an
uncharted island and meet an old man named Zenny. Chopper finds out
that, because of his bad heart, Zenny probably only has three days to
live. Luffy wants to make Zenny's last 3 days perfect. This arc was
skipped in the 4Kids dub.
Rainbow Mist arc: Anime Only, Episodes 139-143:
On Ruluka Island, some of the Straw Hats make enemies of the Mayor and
his men, who have placed high taxes on everything. Robin, Usopp, and
Luffy meet Professor Henzo, who's doing research on the island's
rainbow mist, which is a warp in spacetime. As the Straw-Hats and Henzo
enter Rainbow Mist, they meet 5 children from Henzo's past. This was
the last arc to be dubbed by 4Kids.
Jaya arc: Chapters 217-236, Episodes 144-152:
When a ship inexplicably falls from the sky and the Log Pose starts
pointing up, they go to the island of Jaya for information on "Sky
Island". There, they encounter Bellamy, a pirate who is heralding a
"New Age" where pirates don't dream, and a man named Monteblanc
Cricket. This is the first arc to be dubbed by FUNimation.
Skypiea arc: Chapters 237-302, Episodes 153-195:
Riding the Knock-Up Stream, the crew finds themselves in the "White
Sea", a sea in the sky. However, things aren't as peaceful as they
seem, as there is a war between the Sky People and the natives who
originally inhabited the Upper Yard, where the cruel "god" Enel makes
his home.
G8 arc: Anime Only, Episodes 196-206:
After their big adventure on Skypiea, Luffy, his crew and the Going
Merry fall out of the sky returning to the blue sea. They have bad luck
when the ship crashes in the marine base G8.
[edit]CP9 Saga
Davy Back Fight arc: Chapters 303-321, Episodes 207-219:
After the crew escapes from the marine base, they encounter Foxy, a
pirate who challenges them to a "Davy Back Fight", a series of games
where the winner takes crewmates from the loser. If Luffy loses, he
loses his crew.
Ocean's Dream arc: Anime Only, Episodes 220-226:
In one night, a shadow comes and steals the crew's memory. The only one
left who remembers everything is Robin, and tensions rise between the
amnesiatic pirates. When they go to a nearby island, they find that
everyone there has lost their memories too. Not only will they have to
find a way to return their memories, but they have to find the one who
took them and stop him.
Water 7 arc: Chapters 322-374, Episodes 227-263:
In search of a shipwright to join the crew, they land at the thriving
metropolis of Water 7. Here, the crew falls apart as two members leave.
Not only that, but the Straw Hats are framed for the attempted
assassination of Water 7's mayor and president of the Galley-La
shipbuilding company, Iceburg.
Enies Lobby arc: Chapters 375-430, Episodes 264-312:
The Straw Hats, Franky Family, and Galley-La team up to rescue Nico
Robin and save Franky. To do this, they attack Enies Lobby, a
government stronghold where CP9 is based, declaring war on the World
Government.
Post-Enies Lobby arc: Chapters 431-441, Episodes 313-Present:
The Straw Hat Pirates take a break in Water Seven to recuperate after
the events at Enies Lobby and the loss of the Going Merry. Amidst their
long deserved break, an important figure from Luffy's past appears.
Meanwhile on Banaro Island, Ace finally confronts Blackbeard. The Straw
Hats get a new ship, the Thousand Sunny, from their newly recruited member, Franky.
Current Saga
Thriller Bark arc: Chapters 442-Present:
The Straw Hats sail into the Florian Triangle, known as the Devil's
Sea, where they encounter a living skeleton, named Brook, who leads
them to a spooky island/pirate ship complete with a mad scientist,
ghosts, zombies and a shadow-stealing Shichibukai.