One Piece follows Monkey D. Luffy and his pirate crew as they search for the legendary treasure, One Piece, while facing powerful enemies and adventures.
Young Luffy sets sail from his hometown, dreaming of becoming King of the Pirates. He quickly encounters trouble with some local pirates.
Luffy meets Koby, a captive forced to do chores for the ruthless pirate, Alvida. He promises to help Koby achieve his dream.
Zoro is still tied up, refusing to help Nami and Luffy fight Captain Morgan. Luffy makes a promise he intends to keep.
Zoro's past is revealed as Luffy faces Captain Morgan's tyrannical rule. He aims to free the town and help Zoro join his crew.
Zoro is captured and held captive at the Marine base. Luffy confronts Axe-Hand Morgan to free his new crewmate and prove his worth.
Zoro faces Morgan's henchman. Luffy fights Morgan, leading to a showdown that could decide the town's fate and Nami's true allegiance.
Luffy continues his fight with Cabaji. Zoro gets kidnapped and is being threatened by Mohji and Richie the lion.
Nami betrays Luffy and joins Buggy! Zoro is captured, and Luffy must face Buggy's crew alone to save his friend.
Nami betrays Luffy, and Buggy the Clown wreaks havoc. Zoro faces a deadly fight, while Luffy is trapped in a cage.
Luffy and Zoro battle against Mohji and Richie, and Nami leads Usopp to Kaya's mansion to warn her of Kuro's deadly plot.
Nami's betrayal shocks the crew as she steals the Going Merry and heads towards Arlong Park, leaving Luffy and the others confused.
Zoro is captured! Luffy and Nami must sneak into Buggy's stronghold to rescue him before he faces a deadly public execution.
Nami leads Luffy and Zoro into a booby-trapped forest controlled by Buggy's crew, hoping to steal their treasure and escape.
Nami's betrayal comes to light as she attacks Usopp, stealing the Going Merry. Luffy, Zoro, and Usopp pursue her.
Zoro is captured! Nami betrays Luffy, and Buggy plans to execute Zoro in front of the entire town.
Usopp's lies become reality! Kaya's life is in danger as Captain Kuro reveals his sinister plan to take over her fortune and the village.
Nami's past is revealed as the crew reaches Cocoyasi Village. Luffy confronts Arlong, foreshadowing a fierce battle for the island's freedom.
Gaimon, a man stuck in a treasure chest, has guarded his island's treasure for twenty years. Luffy's crew learns of his story.
Luffy and Zoro face off against Buggy's crew in Orange Town, while Nami struggles with her past and her allegiance to the Straw Hats.
Sanji's past is revealed as the Straw Hats continue their journey to the Baratie, a floating restaurant, but trouble arises.
Nami's betrayal becomes clear as she steals the Going Merry and sets sail for Arlong Park, leaving the crew shocked and angered.
Usopp's lies become reality as Captain Kuro's Black Cat Pirates launch their assault on Syrup Village. The Straw Hats must protect Kaya!
Usopp and Kaya's relationship deepens as Kuro's sinister plan begins to unfold. Luffy and the Straw Hats prepare to defend Syrup Village.
Usopp faces his fears, determined to protect Kaya from the Black Cat Pirates. Luffy and Zoro continue their battle against Captain Kuro.
Luffy and Sanji infiltrate the Baratie, facing fierce opposition from its cooks, while Zoro struggles to survive his duel with Mihawk.
Luffy and Zoro struggle against the hypnotic powers of Jango, while Usopp desperately tries to wake Kaya before Kuro arrives.
Luffy and Zoro face Mihawk, the world's greatest swordsman. Zoro challenges him, resulting in a devastating defeat that tests Zoro's resolve.
Nami falls ill! Luffy and Sanji venture to find a doctor, landing them in a village plagued by a mysterious, deadly disease.
Zoro faces a deadly dilemma against Mihawk, while Luffy struggles to even land a blow. An impossible challenge looms.
Usopp's plan to fix the Going Merry is put into action, while the crew faces the eccentric Gaimon, a man stuck in a treasure chest.
Usopp's past is revealed as Kaya's illness worsens. The Straw Hats desperately fight to protect her from the evil Captain Kuro.
Usopp's past is revealed as Kaya's life is threatened. The Straw Hats must defend her from Captain Kuro's deadly Black Cat Pirates.
Usopp's lies become reality as Kaya's life is in danger! The Straw Hats must face the Black Cat Pirates to save Syrup Village.
Usopp faces his fears and confronts Jango. Zoro struggles against hypnosis, while Luffy is trapped by Kuro's sinister strategy.
Nami's betrayal becomes clear as she attacks Usopp, revealing her alliance with Arlong and his fish-men pirates.
Nami's betrayal is revealed! Luffy confronts Arlong, while Usopp and Zoro face their own deadly battles against Arlong's crew.
Zoro struggles against the Fish-Men as Nami's past and connection to Arlong are revealed, showcasing her desperation and trauma.
Zoro confronts Mihawk, the world's greatest swordsman, in a desperate battle to prove his strength, but faces overwhelming odds and devastating defeat.
Usopp's past is revealed as the Straw Hats finally arrive at Syrup Village, facing Captain Kuro's treacherous plans for Kaya's inheritance.
Zoro battles the formidable Mr. 1, struggling against his steel body. Nami and Usopp face Miss Doublefinger's attacks amidst chaos.
Luffy and the crew battle Wapol and his lackeys in Drum Kingdom, struggling to protect Dr. Kureha and Nami's fragile health.
Sanji faces his past as the Straw Hats encounter the Baratie's bizarre owner, Chef Zeff, leading to a cooking duel.
Zoro faces Mihawk, the world's strongest swordsman, in a desperate duel. Luffy and the others can only watch, fearing for their friend's life.
Nami's past is revealed as Luffy battles Arlong, whose dominance over Cocoyasi Village is absolute. The villagers rally together, determined to fight.
Buggy's crew and Luffy's team face off in an all-out battle for Nami and the treasure map, leading to chaotic clashes and surprising alliances.
Luffy faces off against Buggy the Clown in Loguetown, while Smoker and his Marines pursue the Straw Hats, threatening their escape.
Luffy and Zoro face Mihawk, the world's greatest swordsman. Zoro is utterly defeated, but his display of honor impresses Mihawk.
The Straw Hats face more challenges as they ascend Reverse Mountain. Luffy's recklessness causes trouble, and a giant whale appears!
Usopp faces a tough decision about staying with Luffy or protecting Kaya. He clashes with the crew as they prepare to leave.
Smoker corners Luffy in Loguetown! With his execution looming, Luffy faces a familiar foe, Alvida, as he desperately tries to escape.
Loguetown awaits! The Straw Hats enter the town where the Pirate King died, but Smoker and Tashigi are waiting for them.