Little Frog. Big Mission.
Keroro is Sgt. Frog – the leader of a platoon of warriors sent to conquer planet Earth. But when the Amphibious invaders discovered how much humans enjoy dissecting their comrades, the troops were scattered, the mission was aborted, and Keroro was abandoned. Now, this once proud soldier spends more time wielding a vacuum than he does the weapons of war. It’s a far cry from the glory of battle, but hey, at least he’s got his own room. And though the invasion may have slowed to a hop, Sergeant Frog still occasionally yearns to overcome his karaoke addiction and reassemble his troops. Watch out world, the frogs are taking over.
Keroro is a frog-like alien sent from his home planet on a mission to conquer Earth. But when his cover is blown, his battalion abandons him and he ends up in the home of the Hinata family. There, he’s forced to do household chores and sleep in a dark basement that was once supposedly a prison cell haunted by the ghost of an innocent girl. He even spends his free time assembling Gundam model kits. During his stay, Keroro meets up with subordinates who were also stranded during their failed invasion.
As the mighty star fleet of the planet Keron prepare their invasion of Earth, Sergeant Keroro and his elite team of commandos have been sent to infiltrate the enemy strongholds and gather as much intelligence as possible. However, it seems even his extensive military training is no match for the forces of Earth, as he is discovered and captured by the two middle school siblings, Fuyuki and Natsumi. Submitted to the rigorous torture of housework duty, the amphibious Keroro must now bide his time, covertly locate his squad-mates, and resume his mission of conquest!