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.

Hanejiro returned to Earth in the form of an yellow egg, which fell into the hands of the bumbling Alien Meji Trio. The three, despite being villains, were very protective of him and protected him from prying eyes until Hanejiro returned to Super GUTS. After Dyna was defeated by Wanzetto, Hanejiro helped to destroy the menace by dropping Pudgy Garaon into the monster's brain case. Hanejiro was later taken away once again by the Alien Fabiras

The members of the Super GUTS force, one of whom is secretly Ultraman Dyna, are in the middle of a losing battle against an enormous monster on the surface of the moon, when suddenly a spaceship appears and saves them by zapping the beast. The crew of the ship claim to members of the world peace force that originally created the Super GUTS force, and they invite the GUTS members to enter their brainwave patterns into the ship's battle computer so it can be a more effective fighting system. It sounds like a good idea, but could they have some other plan up their sleeves?

Kota Mizutani, a 10-year-old boy whose health worsened after he saw a murder, is brought to Akiko's clinic by his mother Mariko. Kota says that two months ago, he witnessed a man in a park strangling a woman with a cord and was chased by the man afterwards. Hamada, who listens to his story along with Akiko, immediately performs an investigation but cannot find any traces of the crime. However, Kota's testimony gains credence when the body of a woman killed two months before is discovered on a construction site in Kawagoe. Acting on a tip from a citizen who says she had been wearing the same clothes as the victim, the police search the house of Kazuko Shimazaki, a photographer who is often absent. But when Kazuko returns from her trip with her assistant Hirano, it becomes clear the victim is a different person.

When the head of the touring magician's group "Magical Fantasy" is murdered on a train while on his way to Hokkaido, young Kindaichi, who also just happens to be on board, is fast on the case to find the culprit. But just as quickly as the case unfolds, the body disappears only to be rediscovered again, along with other new bodies.

Ultraman Tiga: The Final Oddysey was sort of an epilogue of the Ultraman Tiga series. Just when we thought that the world is safe, it's under attack again! A TPC excursion (including GUTS' Captain Megumi Iruma) headed to an old ruins and unintentionally woke up three evil ancient giants whom Daigo, later on, has visions of. What's so haunting about his visions is that they're not only three but four evil giants, including Ultraman Tiga in a very dark physique and a very evil aura. After a series of visions, Daigo was able to meet the three evils who beat him up and left the Black Spark Lens to him. Later on, the ultimate battle begins in the ancient ruins. Daigo as Ultraman Tiga, who is supposed to be the warrior of light, must use his powers, however dark, in order to defeat the three evils.