An anarchistic country, rumored to dominate the world, exists on the vast Moekko Island. This is where the final works of AC Company's android combat maids (who resemble beautiful young girls) are completed, and where these maids receive their communication training. A new maid, Rinia, arrives on the island for training. She is a young-looking girl who has lost all her memories. She tries very hard to impress the owner of Moekko Island, but ends up causing a lot of trouble around the mansion. Takahiro, the owner of Moekko Island, is a depressive young man who has also lost his memories. He is seen as a very unhappy person who thinks Rinia will only be trouble around the mansion. As time passes, Takahiro slowly grows attached to Rinia's attempted ways of helping, and so a beautiful relationship begins among the quiet island.