"If you are a pirate among pirates among pirates among pirates, then gather your steadfast crew of friends and set sail for our island." Upon finding an advertisement with these words on it for Omatsuri Island, the only recreational resort on the Grand Line, Monkey D. Luffy and his Straw Hat Crew set out for it immediately.

Enticed by the island's casinos, spas, beautiful women, and exquisite cuisine, the crew are eager to relax and enjoy themselves. Much to their disappointment though, they are told upon arrival that they will first have to pass Baron Omatsuri's "Ordeals of Hell." Once they complete this series of challenges, they will be able to enjoy the resort.

However, problems begin to surface the longer they stay on the island. As strange events continue to unfold, the Straw Hat Crew find themselves at odds with one another, disagreeing at every turn. Will the Straw Hat Crew be able to figure out the truth behind Omatsuri Island, or will they fall apart from infighting first?

[Written by MAL Rewrite]

From the heavenly object known as the Chaos Pearl, two elements are extracted: the Spirit Pearl and the Demon Orb. In an attempt to suppress their power, the Lord of Heaven sends the Spirit Pearl to Earth to reincarnate as Ne Zha, the third son of Li Jing, while the Demon Orb is scheduled to be destroyed by a lightning strike. However, because of a conspiracy by the Dragon King to steal the Spirit Pearl for his own son, Ne Zha is instead reincarnated with the Demon Orb. With no way to remove the cursed effects of the Demon Orb, Ne Zha is raised under the belief that he will become the great demon hunter the Spirit Pearl destined for him to be. Fighting against his chaotic and mischievous nature, Ne Zha must decide whether to accept his evil fate or rebel against it to prove he is worthy of the future his parents foretold.

Not much is notable about the lecherous Ataru Moroboshi, but his extraordinary bad luck sticks out like the horns in an alien's head. When Earth is threatened by a fleet of alien invaders known as the Oni, Ataru is selected to represent humanity in a duel against one of them. It's a stroke of rare luck for Ataru that the duel is in fact a game of tag, and that his opponent is Lum, daughter of the Oni's leader, who places her personal dignity above victory—as Ataru finds out by seizing Lum's bikini top and with it, victory. However, misfortune kicks in again when Lum mistakes Ataru's promise to marry his girlfriend, Shinobu Miyake, as the desire to wed Lum herself, and decides she rather likes the idea. Wielding her influence as an alien princess, she moves in with him. Forced to deal with the consequences of his womanizing ways, Ataru must balance his crumbling relationship with Shinobu while keeping Lum happy, all the while flirting with every woman he meets.

It is the Correct Century, two millennia after a devastating conflict which left the world broken. Earth is now mostly uninhabitable, and thus a remnant of humanity has resided on the Moon while the Earth and its few survivors recover. For years, the "Moonrace," the people of the Moon, have continued to check if Earth is fit for resettlement. A boy named Rolan Cehack and two others are sent down to Earth for a reconnaissance mission. Rolan ends up spending a year on the planet working for the Heim Family, aristocrats living in a Victorian-like society. This family, like others of similar wealthy status, celebrates one's coming of age with a ceremony involving a giant stone statue known as the "White Doll." To Rolan's surprise, the Moonrace suddenly touches down on Earth with the intent of taking it by force. During the attack, the White Doll is broken apart, revealing a mobile suit called the "Turn A Gundam" inside. With Rolan in its cockpit, the Turn A causes a standoff between the forces of Earth and Moon. The young pilot, along with the people of both sides, must keep the peace and avoid another all-out, catastrophic war. [Written by MAL Rewrite]