The third film in the 'Drift' series.

Ultraman Mebius is joined once again by Ultraman, Ultra Seven, Ultraman Jack, and Ultraman Ace, as well as three later Ultramen (Tiga, Dyna, and Gaia) to fight more powerful versions of familiar Ultra Monsters.

Ultraman and his comrades from M-78 (including a new Ultraman, Zero, the son of Ultra Seven) join forces with other allies to fight a massive army of giant monsters led by the evil Ultraman Belial.

In the beginning of the movie, 20 years ago, on the moon, the 4 Ultra brothers, Ultraman, Seven, Jack, and Ace were fighting a deadly foe known as Yapool, a monster that was several times their size. As they fought, Yapool had a clear advantage and used his several claws to grasp the brothers, although, they managed to clear from the claws through there powers and used a combined Specium Ray to no avail. The monster then flies off to Earth to dodge the attack and the brothers follow. The brothers were barely able to defeat Yapool but the monster still needed to be sealed. However, to seal Yapool away they were forced to give up the ability to transform, and took up jobs to be in the area of Kobe in case the monster ever returned.

Futakotamagawa High School had a Baseball Club, but because of a fight during one of their games, they were suspended for a year from all games. Composed of student delinquents, Futakotamagawa High's new Literature teacher Kawato Koichi inspires the Baseball Club to believe in a dream goal once again. For them, it is to play at the Koshien - Japan's National High School Baseball Championship. But, Kawato Koichi and the newly reformed baseball team run into plenty of obstacles along the way...

Shinpei (Junpei Mizobata) dreams of being a professional cameraman and lives in Tokyo. One day, he hears that his mother has been hospitalized and returns to Kochi for the first time in five years. At the hospital, Shinpei finds out Sakura (Ayane Omori) who is the younger sister of his ex-girlfriend, has a bad disease, which no one has lived with for more than 5 years. This might be her last summer. Sakura strongly hope to dance at the Yosakoi festival, and five years ago, Shinpei made a promise to her that they would one day dance together. Sakura still remembers the promise and it also gives her the drive to live longer. Shinpei decides to dance once more at the upcoming Yosakoi festival, however. . .

Hyasaka Yukari only wants one thing: to enter the college that her mom wants. One day, she meets an extravagant group that loves fashion. They were searching for a model and Yukari fits their ideal model. From now Yukari will know the world of fashion and modeling, and what she really wants.

The first of a 2-part sequel to the 2006 TV Series Ultraman Mebius. After the death of Alien Empera, the sentient being known as Armored Darkness is activated to carry out the Emperor's Plan B. To make its presence known, Armored Darkness revives the monsters Saramandora, Roberuga, Mukadender, and Cherubim.

While the Subordinate weeped, Mirai informed him that Ryu was alive, saved by the power of Ultraman King. He revealed that after Alien Emperor's defeat, Armored Darkness had been known for some time and Ultraman Hikari was sent by Ultraman King to destroy it before it could reach Earth, but the Armor's strength overpowered him and possessed him.

In the Land of Light, the Ultra Brothers receive the interrupted Ultra Sign sent by Hikari, which comes from the Monster Graveyard. Obtaining Zoffy's approval, Ace and Taro depart to investigate the matter while Mebius, on his routine patrol, is quickly notified by Zoffy to join the investigation.