In the thrilling world of One Piece, Portgas D. Ace meets his end in a heroic and heartbreaking way. He was captured and set to be executed at Marineford, which sparked a massive battle as his allies, including the Whitebeard Pirates, fought to save him. Despite their efforts, Ace was tragically killed, marking a significant and emotional point in the series. His death is covered in detail in Chapter 574 and Episode 483 of the anime, and his memory continues to impact the characters and storyline.