One Piece is about Monkey D. Luffy, a young man whose body became rubber after eating a Devil Fruit, as he and his crew of pirate Straw Hat Pirates sail the Grand Line in search of the world's greatest treasure, the "One Piece," to become the next King of the Pirates. The long-running series is a high-seas adventure filled with action, humor, and a focus on friendship, perseverance, and pursuing dreams.