, titled "The Betrayal of the Heroine! The Speculations of Nico Robin!" , is a pivotal episode in the Water 7 Arc that clarifies the motivations behind Robin's actions. Episode Summary
: Iceburg reveals to Nami the true reason for Nico Robin’s "betrayal." He explains that Robin made a deal with CP9: she would turn herself over to the World Government and assist in recovering the ancient weapon Pluton's blueprints in exchange for the Straw Hats being allowed to leave Water 7 safely. One Piece (Dub) Episode 251
: You can watch the English dub of One Piece on Crunchyroll . , titled "The Betrayal of the Heroine
: As of early 2026, the English dub has progressed well into the Egghead Arc , with final batches expected to conclude the series' current English rollout by March 2026. : You can watch the English dub of One Piece on Crunchyroll
: Upon learning the truth, Nami realizes the crew must stop Robin before she is taken to Enies Lobby. She immediately searches for Chopper to help reunite the scattered crew and launch a rescue mission. Dub & Streaming Availability