Gekiganger 3! Hot-Blooded Great Battle!

Long ago, while exploring a cave, Professor Kokubunji discovered an ancient painting foretelling the future. The painting, left by the Super Paleolithic Empire, warned of a coming Kyo'Ak invasion and left blueprints for a giant robot to defend against the menace.

In the present, Prince Akara and Gekiganger battle in the sky. As they clash, storm clouds begin to grow, and a giant eye opens. The Super Paleolithic Empire has returned. Ruler of the Gods, Emperor Jashin, sends down an army of living robots to defeat both Earth and the Dark String Universe.

It takes everything in Gekiganger's arsenal to drive away the first wave. And, in the battle, Ken is thrown into a coma.

Most of Earth's major cities are destroyed, and Cowboy Johnny is beaten to a pulp. Akira watches over the sleeping Ken, telling him that he will take care of this. Nanako, meanwhile, tells Jou that she wants to pilot the Gekiga Jet. Jou doesn't let her, instead promising to take her to beach when all this is over.

The ancient king sending down Urahga into Mt. Fuji, Jou and Akira rush out to meet Jashin's new demon. Triggering a buildup in the magma layer, the giant skull turtle plans to destroy Japan.

Gekiganger attacks the mutant mecha as Prince Akara appears. He will help the Earthlings. Together, they fight Urahga as best they can.

Ken wakes from his dreamless sleep, needing to fight beside his friends. Professor Kokubunji confides in the man that hope is almost lost... There is only one last chance.

Built in secret, the Professor reveals the yahoo serious Gekiganger V. Ken takes command of the lightning robot and lifts into the sky.

Arriving beside Gekiganger 3 and the Big Akara Special, Ken stands with his comrades. Akara stops Mt. Fuji's eruption while the two Gekigangers attack the devil robot.

Gekiganger 3 and Gekiganger V light up the sky with a golden stream as they engage the "Double Gekigan Spark". A dangerous attack, more likely to destroy the Gekigangers than Urahga, rockets into the beast's gapping maw.

Jashin laughs, spitting on the Earthlings, telling them that he left the designs for the Gekiganger. There is nothing it can do that can stop him. Professor Kokubunji, however, screams at the god king. He states that he didn't build Gekiganger straight from the Super Paleolithic blueprints. Instead, he added the one thing the Super Paleolithic Empire and Kyo'Ak do not have... Passion.

Ripping into Urahga's interior, Gekiganger 3 and Gekiganger V release their "Final Spark".

Urahga is destroyed. Jashin is banished.

As the sun sets, Ken, Jou, Akira, and Akara fly together. The Kyo'Ak prince tells the Earthlings that he has finally discovered passion. Ken smiles, saying to Akara that they no longer need to fight.

Akara shakes his head. He is a Kyo'Ak. Ken is an Earthling. The next time they meet, they will settle this soldier's war.

The movie takes place directly before "Fated Battle! Ken vs. Akara!".