Sergeant Keroro: The Super Duper Movie 2 is an anime film that premiered in spring 2007, produced by Sunrise.

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

Its main genres are action, adventure, comedy, drama and sci-fi, with themes such as Aliens.

On AniList, Sergeant Keroro: The Super Duper Movie 2 has an average score of 68%, a good score, and appears on 1,729 users' lists.

During a vacation Natsumi is visited by a female alien and male alien who she later gains feelings for from the ocean that makes her the Deep Sea Princess who, along with the rest of the Keroro Platoon, encounter many dangers summoned by a mysterious creature. (Source: Wikipedia)

Official synopsis from AniList.