A.D. 2115—the island nation once called Japan is now known as the "17th Far East Imperial City Management District." The citizens were promised a life of peace in exchange for some of the comfort they were used to having. People believed their lives would never change and tomorrow will be the same as today. No one suspected the impending doom which their society was about to face. "Degradation"—a rare disease which led to the total disintegration of the human body to a mere pile of sand was slowly but surely spreading throughout the world. Tohru Kazasumi, an ordinary student becomes embroiled in a multi universal battle between his world and the parallel world of "Frontier S (Stratos)." This meant that Tohru must fight himself from an alternate world. Their futures collide as their paths cross. Will both worlds ever find peace? (Source: Aniplex USA)

An anarchistic country that is said to dominate the world exists on a vast island known as Moekko Island. This is where the final works of AC Company's android combat maids (resembling beautiful young girls) are done, also where these maids get there communication training. A new maid is to come to the island to be trained, Rinia, she is a young looking girl, who has lost her all of her memories, she tries very hard to impress the owner at Moekko island, but just ends up making a lot of trouble around the mansion. Takahiro, the owner of Moekko island, a depressive young man who has also lost his memories 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 starts a beautiful relationship among the quiet island.

Years ago, many magical "Artifacts" were stolen and scattered throughout the world. They fell into the hands of people who were not supposed to know of their existence, causing misfortune to those who abused their power. The Hoshisato family of magicians has special access to the Artifacts, and they take it upon themselves to return them to their rightful place. Despite her inexperience, Kana "Hatena" Hoshisato wishes to aid her parents Mamoru and Maeve in their quest, doing her best to improve. Meanwhile, her childhood friend Makoto Shiranui has come to their mansion to study magic under her father's tutelage as part of a promise they made years ago. Hatena is excited to see her friend again, only to be utterly disappointed when the person she thought to be a girl all these years turns out to be a boy, leading to a bitter reunion. Before long, Makoto comes to know of the Artifacts and the true identities of the magicians he admires. Unfazed, he continues to strive to fulfill his promises and stay true to why he learns magic—to ease the sadness of people around him and, most importantly, to become a person worthy of being Hatena's partner. [Written by MAL Rewrite]

The series revolves around a playful young child named Shizuku-Chan. He, alongside his schoolmates, friends, and family lives a life of dangerous adventures in the Shizuku Forest.