Captain Marvelous has been captured by Damarasu and Basco and is going to be publicly executed while Joe, Luka, Ahim and Gai are nowhere to be found. Doc, as the final Gokaiger left, must work on his own to save his fellow pirates.

Sally seeks refuge with the Gokaigers when Basco turns on her.

With Basco ta Jolokia in possession of all of their Ranger Keys and 34 of the greater powers, the Gokaigers must find a way to get them back and to defeat him once and for all

The Gokaigers must figure out how to combine all of their powers to defeat Warzu Giru's Great Warzu, while Joe and Barizorg face off for the last time

With Navi's next clue being "Moroboshi High School", Gai realizes that their next clue to the Greatest Treasure in the Universe has to do with the Megarangers. The Gokaigers visit the high school, and discover that Kenta Date, the former Mega Red, has become a teacher, and he tells them that they must become his students in order to obtain his team's greater power

On the Gigant Horse, wondering what their next course should be, Damarsu and Isarn receive an unexpected visit from the Zangyack Imperial Fleet as the Zangyack Emperor Akudosu Gill arrives to the bridge. As news of his son's death has reached him, Akudosu has decided to assume command while having his Imperial Guards take Damarasu to the brig for failing in his mission as he then sends the Imperial Guard Zatsurigu to avenge his son.

Zangyack is advancing on their final plans, which includes an all out attack on the Gokaigers, and the ultimate destruction of Earth! It has been revealed that the Greatest Treasure in the Universe can, and must, be used to wipe out Zangyack's Great Fleet, completely. The Gokaigers are hesitant to do so, as the cost of the power would be the existence of the 34 senior Super Sentai...

Navi asks them to look for a "Tiger Boy for Great Wisdom" and so, they started heading out to search for zoos. However, the Kung Fu Specialist Action Commander, Pachamac XIII appears and begins destroying the city. In the battle, Doc and Ahim tried to take on the Commander and the lost which cause them to feel down for themselves. By chance, the came into a group that teaches Kenpo Lessons for kids. Teaching the kids is a young man and the two started their Kenpo training. Will Doc and Ahim defeat this Kung Fu Specialist? And who is this man?

With Navi's next clue being "Sa-mu-r-aa-i", the Gokai Galleon crew seeks out a kendo club until they are approached by a girl who claims to be the samurai known as Shinken Red. Joe begins training with her to face off against his old comrade Barizorg.

Luka is reunited with her childhood friend Cain who has since become a millionaire

In the past, the 34 Super Sentai defended the Earth against Space Empire Zangyakku. The soldiers of legend lost their powers during this battle, but through their sacrifice, Zangyakku was able to be repelled from the Earth. Several years later, we meet a group of young pirates who travel aboard the ship, GoukaiGalleon. They are in search of the "Uchuu Saidai no Takara" (Greatest Treasure in the Universe). They head towards Earth, where it is said the Greatest Treasure rests.

Navi, using its Otakara Navigate ability to go to the police because they will tell them something good. Later on, Marvelous finds one and he is no other than Space Police's Earthshine Chief, Doggie Kruger! And the problem is, he is interested in arresting the Gokaigers! The Zangyack later appears and Marvelous can't do a thing because he is in handcuffs!

Luka sees a jewel she desperately wants, but to her displeasure a little girl buys it before she can get her hands on it. Suddenly, the girl's father approaches Luka. He'll give her the jewel if she comes and works in his house, and so she is invited. Within the house there seems to be a treasure, as the Zangyack are targeting it as well. For the sake of doing some recon, and protecting a potential treasure, and also for selfish reasons, Luka decides to take the job. But can Luka really do said job? And what is the treasure the Zangyack are looking for?

Joe goes off to face Barizorg alone in an attempt to make him remember his past as Kaoru assists the Gokaigers in their fight against the Zangyack Empire.

The evil in the hearts of Don and Gai is magnified by the powers of the new Action Commander, Evil Spirit Faith Healer Jyujyu. With Ninjaman observing the Gokaiger, what is about to happen?!

Ahim is kidnapped after going out into town and held hostage. Captain Marvelous leads the other Gokaigers to save her, claiming that he does not want to pay the ransom.

Don shows his shipmates that the Gokaigers' bounties have skyrocketed to nearly the same level of the Red Pirates. Showing no interest in the news, Captain Marvelous tells Navi to foretell their next course; the robot parrot, however, sees danger coming their way. Meanwhile, a red Zangyack ship arrives to the Earth with Oiles Gil learning that it is captained by a privateer under the Zangyack Empire. While cautiously exploring in a town, the Gokaigers meet the privateer, who Captain Marvelous identifies as Basco ta Jolokia. He announces that he has also come for the Greatest Treasure in the Universe.

Captain Marvelous must figure out a way to save his crew members from Basco ta Jolokia without paying the ransom of all of the Ranger Keys. The crew must fight the joined forces of Go-onSilver, Go-onGold, GoseiKnight, KibaRanger, ShinkenGold, MagiShine, MegaSilver, GaoSilver, AbareKiller and BoukenSilver.

Marvelous, Joe and Luka are transported to Satarakura Jr.'s “Boki Space.” Yousuke, Nanami and Kouta, of Hurricaneger, convince Gai Doc and Ahim for the return of their ranger keys and break into the Boki Space to rescue them, while Marvelous falls into the worst situation.

After a battle, the Gokai Galleon crew discovers a magazine feature that says that Don Dogoier is a famous warrior who once slayed a powerful dragon, but Doc reveals that he actually has no memories from shortly before he joined the Gokaigers. Damarasu joins forces with Basco in an attempt to exact his revenge on the pirates.

With the Gokaigers holding 29 of the 35 greater powers, and Basco with 5, the Gokai Galleon crew discovers that the only one left is that of the Ninja Sentai Kakuranger. Remembering Negakure Temple, the crew finds a strange pot containing the Kakurangers' ally Ninjaman who tests them to see if they are worthy of the Kakurangers' greater power.

The Space Empire Zangyakku begins their second invasion of Earth. They set up their fleet headquarters between the Earth and the Moon. On the other hand, Marvelous and co. are told by Navi to "start their treasure hunt on Earth by finding people with black clothes." However, because of Navi's rough navigation, they are having a bit of trouble doing that. Coincidentally, in front of them appears a man.

The Zangyack Empire sends the Sneak Brothers to spy on the Gokaigers.

Aboard the Gokai Galleon, the crew is taking a nap when Navi's dream triggers a new clue for the pirates, telling them to learn traffic laws. Meanwhile, while reviewing Zaggai's activities aboard the Gigant Horse, Insarn falls in love with a man that the Action Commander crossed paths with: Kyousuke Jinnai (Red Racer).

When Gai loses the Gokai Cellular to Action Commander Bakyura, he learns what it truly means to be a hero from a strange man who owns a Chinese restaurant.