Sgt. Frog

Season 1, Episode 8

Episode Title: Keroro: Invasion Status is Never Better / Keroro: Building a Base for Dummies

Air Date: 2004-05-22

Overview:

The Keroro Platoon builds a secret base under the Hinata household to further their invasion plan against Pekopon. They're the ones who end up being invaded when unknown intruders discover the base.