Sgt. Frog: Summer Invasion

Sgt. Frog: Summer Invasion is a fan movie based on Sgt. Frog/Keroro Gunso.

Plot
The Keroro Troop have heard that a summer festival is taking place in their human partners' hometown on Earth. They decide to go there and take over the festival. Tamama has never seen a summer festival before, and he wants to be in charge of the mission so he can check it out, because it sounds very cool to him. Keroro isn't so sure about Tamama's idea, but just goes along with it because even though Tamama is the youngest of the troop, he's very skilled and experienced, so he might be able to handle being in charge of at least one mission.

Once they arrive, Tamama becomes very excited. He tells his troop that he wants to try all of the different activities at the festival. He wants to chow down on takoyaki, go fishing at the lake, and watch the fireworks display. Keroro tells him that he has to focus on invading the festival rather than take part of the activities.