G-8 Arc

The fifth filler arc of the anime, G-8 is a fan-favorite caper that picks up the moment the crew plummets back to the sea from the sky island. Rather than landing in open water, the Going Merry drops squarely inside the walls of Marine base G-8, trapping the Straw Hats in a fortress they must escape by stealth and cunning.

Forced to abandon their ship as Marines swarm it, the crew scatters across a base built atop a mountain ringed by water and sheer cliffs. Each member improvises a disguise. Luffy and Sanji pose as a pair of celebrity cooks, with Sanji winning over the head chef Jessica through his skill. Nami works as a janitor and a nurse, Chopper sneaks into the medical wing and aids a squeamish pediatrician, while Usopp, Zoro and Robin bluff their way through the maze, sometimes landing in the brig. Presiding over it all is the deceptively laid-back Vice Admiral Jonathan, who anticipates the crew's every move.

One ambush follows another as Jonathan predicts each escape attempt, exploiting seastone bars and nets to neutralize Luffy. The crew repeatedly slips free through teamwork, disguising the Merry as a Navy vessel, recovering their Skypiea gold and Nami's Waver, and improvising past hostage standoffs. When Jonathan's trump card arrives at nightfall, the base's inner lake drains and strands the Merry on a reef, leaving the ship mired in mud as the Marines close in.

Combining an Impact Dial, a balloon-octopus and dial-powered blasts, the crew launches the Going Merry skyward and sails clear over the cliffs of G-8, escaping at last. Jonathan takes the loss in stride, reflecting that the pursuit galvanized his peace-dulled garrison and gave them rare excitement. The arc closes as a clean, self-contained adventure that returns the crew to the open sea with their treasure intact.