An independent group of researchers called the Godzilla Prediction Network (GPN) actively track Godzilla as he makes landfall in Nemuro. Matters are further complicated when a giant meteor is discovered in the Ibaragi Prefecture. The mysterious rock begins to levitate as it's true intentions for the world and Godzilla are revealed.

JSDF pilot Akane has a fateful encounter when a new Godzilla emerges in Tateyama. As a countermeasure, a cyborg named Kiryu is constructed from the remains of the original. The machine is discovered to harbor the restless soul of the original monster as Akane must learn to find value in her own life as well.

To save the world, Mothra goes back in time in an attempt to defeat a younger King Ghidorah.

Humanity finally rids themselves of Godzilla, imprisoning him in an icy tomb in the South Pole. All is peaceful until various monsters emerge to lay waste to Earth's cities. Overwhelmed, humanity is seemingly saved by a race of benevolent aliens known as Xiliens. But not all is what it seems with these bizarre visitors. If humanity wishes to survive, they must reluctantly resurrect their most hated enemy, Godzilla.

In an alternate timeline the original Godzilla is never defeated and repeatedly reemerges to feed on Japan's energy sources. A new inter-dimensional weapon called the Dimension Tide is created with the intent of eliminating Godzilla. However, the new weapon might also serve as a gateway to something far more sinister.

Mothra and her fairies return to Japan to warn mankind that they must return Kiryu to the sea, for the dead must not be disturbed. However Godzilla has survived to menace Japan leaving Kiryu as the nation's only defense.

Kouta is taken into a new version of Zawame, where soccer teams aim to win the All Rider Cup. The reward: The golden fruit. A strange man named Kougane starts sending locusts to other Armored Riders, consuming them, leaving their Lockseeds intact in order to revive his Golden Lockseed. Along with a strange youth named Lapis who seems to have a relation to the new world, will the Beat Riders be able to stop him?

A look at the unrecognized work of the talented artists and craftsmen who've maintained the tradition of Japanese special-effects. Highlighted is Yasuyuki Inoue along with various crew members who crafted meticulously detailed miniatures and risked life and limb as suit actors. All done to bring to life some of film's most iconic monsters through a distinct Japanese artform.

Big Rally! Titan Boy! is the second movie of Choushinsei Flashman. It is a theatrical edit of episodes 15 to 18 (The Giant Robo is Worn Out, The Human Minimini Plan, The Mysterious Giant Reckless Car! and Big Turnaround! The Transforming Robo) with new and extended scenes.

The Flashman find themselves protecting a puppy targeted by Mess due to it being the weakness of a chimera Beast Warrior.