In a parallel world reminiscent of Japan's Edo Era, Luffy takes on the role of a law enforcer. The story splits into two parts, the first focusing on Luffy's run-in with the mischievous Buggy in town, and the second on the sudden appearance of the mysterious Vivi, who appears from episode 253 onward. Several characters from the series make brief appearances, adding depth to the plot. Additionally, an extended set of episodes is included after episode 290, as part of a special New Year's celebration.