Sergeant Keroro: The Super Duper Movie 4 is an anime film that premiered in spring 2009.

About the production: the film runs about 78 minutes and its current status is "finished".

Its main genres are comedy, with themes such as Aliens, Kids and Dragons.

On AniList, Sergeant Keroro: The Super Duper Movie 4 has an average score of 68%, a good score, and appears on 1,472 users' lists.

Mysterious giant beings called "Ryū no Shippo" (Dragon Tails) appeared across the world. Due to the danger it could bring, the Keroro Platoon did a worldwide research on the Dragon Tails, but Tamama suddenly disappeared during the research. Because of this, the whole platoon started their search for Tamama and ended up in Mont-Saint-Michel, France where they met mysterious girl named Sion, who holds the mysterious Ryū no Hon (Dragon Book). But little they know about the secrets about her and the worldwide calamity that would destroy the entire world, as they know it... (Source: Anime News Network)

Official synopsis from AniList.