Three eight-year-old girls, Mao, Misora and Sylvia, try to defend the earth against invading aliens. The world's defense has fallen to unlikely straits because the aliens are excessively cute, of which combat engagements are televised: if the forces battling the aliens were not cute themselves, the general public would revolt, as it would be seen as "bullying". Consequently, three military leaders chose their granddaughters to be the defenders, fittingly, becoming a team even cuter than the aliens. They each have a clover-shaped badge that enables them to transform.
I'll Protect Japan by Myself!
First Deployment of Mao-chan!
The Air Defense Force, Misora-chan
The Sky and Land are One
Sea Defense Force Silvia
Anyways, Let's Have a Meal
I'll Eefend Even the Water Striders!
Project "Defense Barrier"
Formation, Total Defense Party
Japan Collection Mission
Put Everything Aside, It's a Field Day!
Asleep or Awake, We Must Defend!
My Mother Came!
Defense Headquarters Crisis
Kikuchimonji the III Enters!
Mii-kun Ran Away
An Actor's Road is Harsh...
The Cheerful Snow Festival!
Apples - Tangerines - Melons
To the Hot Springs to Pass the Exams for Todai!
American Defense Girl
Let's Defend Happiness!
I'm Sorry, Mii-kun
The Woman of the Purple Lilies
Protect the Memories
Today I'll Defend Loosely as Usual!