Another Kiruru appears in the South Pacific, but it was defeated by two unknown entities that look like Keronians, with subtle differences. Meanwhile, Keroro and the gang goes for a trip sponsored by Momoka to a private island. There, an alien named Meru, who claims himself as the prince of the deep sea, captures them, and aims to make Natsumi his princess, and that they had captured Keroro, who pleads to them to assist the Keroro Platoon, only to be kicked out.
Released: Mar 17, 2007
Runtime: 77 minutes
Genre: Animation, Comedy, Science Fiction
Stars: Kumiko Watanabe, Etsuko Kozakura, Jouji Nakata, Takehito Koyasu
Crew: Masahiro Yokotani (Screenplay), Susumu Yamaguchi (Storyboard Artist), Fumitoshi Oizaki (Character Designer), Fumitoshi Oizaki (Supervising Animation Director), Morifumi Naka (Animation Director), Takayuki Uragami (Animation Director)