The Whole Cake Island Arc is the 29th story arc in the One Piece manga and anime series, also known as the Totto Land Arc or Sanji Retrieval Arc. It is part of the Yonko Saga and follows Monkey D. Luffy and his crew as they venture into the territory of the Yonko Big Mom (Charlotte Linlin) to rescue their crewmate Sanji from an arranged marriage intended to secure a political alliance between the Charlotte Family and the Vinsmoke Family
. This arc spans from Chapter 825 to Chapter 902 in the manga, covering about 78 chapters, making it the second longest arc in One Piece history after Dressrosa. The anime adaptation covers episodes 783 to 877, airing from 2017 to 2019
. The storyline deeply explores Sanji's backstory and family dynamics, while also showcasing the terrifying power of Big Mom and her forces. It features multiple subplots involving other Straw Hat members and allies, including Nami, Chopper, Brook, and the Mink tribe members Pedro, Pekoms, and Carrot. The arc is known for its emotional depth, political intrigue, and character development, especially highlighting themes of family, loyalty, and ambition
. Overall, Whole Cake Island is praised for its strong mix of emotion, power, and storytelling, making it one of the most intricate and underrated arcs in the series
