The film opens with a wave of cosmic terror sweeping across Tokyo, orchestrated by the tyrannical Gozma Empire, led by the ruthless commander Queen Ahames. Sensing a catastrophic shift in the Earth’s energy, the five members of the Dengeki Sentai Changeman—Hayate, Tsurugi, Ozora, Kisa, and Nagisa—transform into their powerful combat forms to confront the immediate threat. Ahames is not merely launching a standard raid; she has captured a mysterious,
extraterrestrial youth named Kana, who possesses a rare and volatile celestial energy source that the Gozma Empire intends to weaponize to obliterate the planet's core defense grid. Driven by their unwavering duty to
protect humanity, the Changemen immediately mobilize their advanced fleet and plunge into the heart of the crisis.As the heroes battle through relentless hordes of alien foot soldiers and monstrous beast-warriors, the emotional core of the narrative centers on their desperate attempts to rescue Kana. The young alien is terrified, having lost his home world to Gozma’s relentless planetary conquests. The Changemen empathize deeply with his plight, fueling their fierce determination to break through Gozma's heavily fortified orbital stronghold. Meanwhile, Ahames grows increasingly unstable and desperate, pushing her troops to the brink of destruction as she realizes the heroes are systematically dismantling her tactical advantages. The tension peaks when Ahames forces the team into a brutal gauntlet of synthetic doppelgängers and high-stakes psychological traps designed to divide their focus and crush their morale.Relying on their unbreakable bond, supreme teamwork, and unyielding willpower, the Changemen overcome the deceptive illusions. They shatter Ahames's primary defense barrier and successfully secure Kana, whisking the boy to safety just as the alien fortress begins to self-destruct. Cornered and enraged by her failure, Ahames unleashes her ultimate, mutated form, growing to colossal proportions to crush the heroes beneath her feet. Undaunted, the Changemen summon their formidable mecha, the Change Robo. A thunderous, city-shoving final battle ensues amidst towering skyscrapers and roaring explosions. Drawing upon the collective life force of the Earth, the Changemen channel every ounce of their remaining energy into the Earth Flash sword technique, delivering a devastating, decisive strike that obliterates Ahames’s giant form and forces the surviving Gozma forces into a humiliating retreat. In the aftermath, as the smoke clears over a peaceful Tokyo skyline, the Changemen bid a warm and poignant farewell to Kana, who departs for a safe haven among the stars, knowing that Earth is forever guarded by its courageous and stalwart defenders.