Sgt. Frog: The Super Movie 3 - Keroro vs. Keroro: Duel in the Skies

Synopsis

The story opens as Fuyuki Hinata and the Keroro Platoon venture into a forgotten temple perched in the mountain city of Machu Picchu, Peru. During their search, Keroro inadvertently trips a hidden trap, and by pure luck they uncover a secret room. At its center rests a massive blue crystal, displayed on a stand fitted with a key. When Keroro presses against the key, he triggers a mysterious mechanism, and the whole temple begins to tremble. Realizing the danger, the group scrambles to escape the chamber. In the chaos of their retreat, Keroro drops his Kero Ball, while Fuyuki catches a brief flash of a radiant young woman inside. He tries to tell Keroro about her but is forced to keep running before he can explain further. The team makes it out safely, and the girl—now growing a pair of luminous wings—watches them depart. Meanwhile, back in the chamber, something begins to take shape inside the crystal...