REIDEEN

Junki Saiga discovers a golden bracelet and a giant robot after his father's remains are found.

Junki Saiga, a high school student living with his mother and sister Kuraka, believes giant robot stories are fictional. In the near future, police inform him that the remains of his father, an archaeologist who disappeared ten years ago, were discovered at Kurokami Mountain in Iwate Prefecture. The family travels to the site, where Junki loses consciousness and experiences a strange vision. Upon waking, he holds a golden bracelet inscribed with "The Great Reideen." That night, a meteorite strikes Earth, and a massive mechanical monster emerges from a nearby dam's artificial lake. Simultaneously, a gigantic golden figure appears on Kurokami Mountain, suggesting Junki has acquired a titanic power that may bring glory or terror.

The Legendary Warrior

Junki regains consciousness in the Reideen cockpit as the mecha faces a helpless position against Bagels. The golden giant envelops itself in light and vanishes, leaving Bagels immobilized with part of its face shaved off. Junki lies unconscious nearby. The following day, Self Defense Police servicemen attempt to remove the seemingly harmless Bagels, but the mechanical beast suddenly activates. It advances through a mountain region, heading directly toward the urban area where Junki’s family resides.

Akira joins Junki's class while an invisible enemy attacks as Junki struggles to summon Reideen.

Akira Midorino transfers to Junki's class, initially drawing his interest. However, Junki feels sorrow upon learning her school change relates to the Miyanobe Village incident. Simultaneously, an invisible enemy arrives, causing widespread destruction. Junki attempts to summon Reideen, but mental images of Akira and the previous battle prevent him from fading in with the golden titan. In contrast, the new adversary attacks without hesitation, leaving Junki unable to respond effectively to the threat.

Junki and Maedasaki encounter the invisible Pnebuma after escaping a collapsed building

Junki and Maedasaki find themselves trapped beneath the rubble of a collapsed structure. While searching for a way out, they stumble upon a stone palette bearing ancient inscriptions. Their situation worsens when an unidentified attacker targets them in the darkness, forcing a desperate escape to the surface. Upon emerging, they face a camouflaged Pnebuma. The narrative focuses on their struggle to survive and determine how to defeat this unseen opponent. This summary is based on information provided by Production IG.

The White Herons Unit forms to monitor Reideen amidst a new monster threat

The Self Defence Police establishes the White Herons Unit to support and monitor Reideen and its pilot, Junki. When authorities request Junki's direct collaboration, he hesitates to comply. Shortly thereafter, another gigantic mechanical monster named Poson appears. The Self Defence Police deploys their Jinrai, or Thunderbolt, mechs to launch a counterattack that seemingly destroys Poson. However, as Reideen emerges, the defeated monster begins to move again, indicating that the initial assault was not entirely successful. This development complicates the situation for the newly formed unit and its pilot, who must now address the renewed threat while navigating their complex relationship with the police force.

Junki Refuses Government Cooperation as Mechanical Beast Returns

Following the conflict with Poson, Junki resolves to cease collaboration with the government. A mechanical beast subsequently reappears at the Self Defense Police factory site. Poson engages in combat by disassembling its own body parts to strike its opponent. Reideen is lifted high into the sky, appearing helpless as its massive form plummets toward a fatal crash.

Zethesis Emerges in Okutama Mountains as Hayate Activates

A new giant mechanical beast named Zethesis appears in the Okutama Mountains. Maedasaki contacts Junki, who arrives with God Bird to investigate. Zethesis sprays a strange green liquid during the encounter. Simultaneously, the Self Defense Police announces a new anti-giant mechanical monster weapon called Hayate, meaning gale. During a press conference filled with flashbulbs, Hayate suddenly begins to move while standing upright. This development marks a significant shift in the response to the emerging threat in the region.

Hayate flies with a serviceman inside while Zethesis appears to block the missile.

Hayate takes off into the air carrying a Self Defense Police serviceman, equipped with a new destructive air explosion bomb. Junki pursues using God Bird to intercept him. Meanwhile, Self Defense Police top staff order the destruction of Hayate and the trapped serviceman. A missile approaches Hayate above the Boso Peninsula. Zethesis suddenly emerges, creating a complex situation. The narrative questions whether Junki and Reideen can successfully stop both the missile and the emerging threat. The episode features intense aerial conflicts and high-stakes decisions by military personnel regarding the safety of the serviceman and the neutralization of the powerful bomb. Production IG provides the source material for this action-packed sequence involving multiple characters and dangerous weaponry.

A sudden Tokyo blackout reveals a clash between Reideen and Muda in the bay.

During a summer night, a power outage strikes Tokyo while Junki receives an urgent call from Maedasaki reporting a giant mechanical beast in Tokyo Bay. Amidst the twilight, the golden titan Reideen engages in combat with Muda along the coastline. Following a series of attacks by Reideen, Muda vanishes into the shadows. However, mysterious aliens observe the golden titan through a monitor screen from the darkness. As the battle concludes, a new trap begins to close in on Junki and Reideen, setting the stage for further conflict.

Junki's Insecurity Grows as Reideen Loses Its Glow Against Muda

During the Kendo Regional Tournament, Junki secures a narrow victory that deepens his insecurities following the previous battle with Muda. Akira confronts him, questioning if he has truly reached his limits. A sudden blackout occurs, allowing Muda to absorb energy from the industrial area and transform hideously. Reideen intercepts the mutated creature, but Muda delivers a devastating strike that causes Reideen to lose its glow.

Gadion

Departure from the cosmos

A festival event takes place involving characters and locations mentioned in the source material.

A perilous underwater trial tests the limits of the characters in this aquatic episode.

The Sea's Sleeping Legend

Skies of Madness

An attack occurs during a storm

The Scent of Farewell

Undesired Power

The narrative centers on the phenomenon of time being halted.

The strategic maneuvers start to take effect

Awaken and Fight

Roxell appears once more

Gadion Stands