Here’s a photo of a promotional event in Japan, with Keroro along side by Dark Keroro (look familiar? LOL!!). And here’s the synopsis of the Keroro Movie 3. It starts out with Keroro Platoon going along a trip with Fuyuki to the ancient ruins of the mysterious Incas. While Fuyuki marvels at the great ruins, the Keroro Platoon is secretly carrying another invasion op. In doing so, they get lost within the ruin and accidentally triggers some traps. As they are fleeing from the ruin, Fuyuki notices a mysterious girl within the ruin… … After they return to Tokyo, a mysterious Keronian that highly resembles Keroro appears suddenly. Meanwhile, a mysterious castle also appears in the sky, and strange event starts to happened all over the world… and… I’m afraid you have to catch the rest in the theater… or like me, in a future DVD, that seems to be centuries away from now. T-T