米娜们接到了一封恐吓信，信中写著如果她们不听从指示前往某处，就要向大众揭穿米娜们的真实身分。陆续被叫到某个UFO中的米娜们，在外星人的不断攻击下陷入空前危机，她们是否能平安回到地球呢？

All of the Miinas are captured by an alien. They must win a game of ping-pong against it or have their identities revealed. But the alien uses hypnotic powers on each Miina, which puts them in a sub-conscious state of mind to distract them from the game. But during the sub-conscious state of mind, the alien reveals that all of the Miinas, struggle with their own responsibilities and dreams. Tsukishiro realizes she's not the only one struggling. When Ootsuki plays, she counteracts the hypnotic spell by claiming she will never be defeated as long as she tried her best until the end. Tsukishiro recognizes the quote: a quote from Suirin years ago when she was Mina's age. Then, she realizes Ootsuki truly is Suirin. Ootsuki defeats the alien, but he reveals the Miina's identities anyway to every television in the world-or so he thinks-Nanashi deleted all video evidence of the Miinas. Unfortunately, the alien self-destructs the ship.

Toutes les Miina ont été kidnappées et rassemblées dans un vaisseau spatial par un Rallyen, un alien doué au ping-pong. Ce dernier semble déterminé à révéler leurs identités si elles refusent de jouer avec lui.

指定したポイントに集まらなければ正体をばらすという宇宙人からの脅迫状がミーナたちに届く。UFOに集まったミーナたちは宇宙人の執拗な攻撃を受ける。彼女たちは無事地球に帰ることはできるのか？