トリクル星の女王に即位したニコラは、地球との同盟を結ぶことに。その立会いに招かれた爆笑戦隊ブンブンジャー。しかし突如現れたハシリヤンの残党マンホールグルーマーに、ニコラからトリクル王家の宝玉を奪われてしまう。さらに宇宙五道化師の一人ミノンガンも現れ、同盟の儀式のために用意されていた聖剣オージャーキャリバーZEROを奪ってしまう。キングオージャー達も現場に駆けつけブンブンジャーと共に戦うが、マンホールグルーマーの不思議な力により戦士達はバラバラになってしまう。星々に散ったキングオージャー達は窮地を脱すべく各々行動を開始する。やがて地底から危険な鼓動が響き始める。強大な悪意が目覚めようとする時、二大スーパー戦隊は再び集結し、共に戦うことができるのか？三ツ星を巡る戦いが今始まる…！
Nicola, who has been crowned queen of the planet Trickle, has decided to form an alliance with the planet Chikyu. The Bakuage Sentai Boonboomger were invited to witness the event. However, a remnant of the Hashiriyan, Manhole Grumer, suddenly appears and steal the jewel of the Trickle royal family from Nicola. Furthermore, Minongan, one of the Uchu Five Jesters, also appears and steals the holy sword OhgerCalibur ZERO, which had been prepared for the ceremony of the alliance. The King-Ohgers rush to the scene and fight alongside the Boonboomgers, but the warriors are separated by the mysterious power of Manhole Grumer. Scattered across the stars, the King-Ohgers begin their own actions to escape their predicament. Soon, a dangerous heartbeat begins to echo from the depths of the earth. When a powerful malevolence is about to awaken, will the two great Super Sentai be able to come together again and fight together? The battle for the three stars begins now...!
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