Kou comes to a slum neighborhood in search of his elder brother Takumi and finds him to have become the head of a private detective firm. Kou is drafted by Takumi to do errands and chores in the detective firm, and they come to meet various interesting people... (Source: MAL News)

The Earth has developed a defense system against large meteorites that are on a collision course with it. This protection system is made up of the Comet Blasters based in several space stations as the 1st line of defense, using nuclear warheads launched by spaceships. The 2nd line of defense consists of the Meteor Sweepers launching from ground airbases using hypersonic planes with special missiles to deal with the resulting debris from the blasts. Mikaze is a troubled girl that is a trainee pilot for a Meteor Sweeper team that dreams of becoming a prestigious Comet Blaster pilot. Stratos 4 revolves around Mikaze's and her teammates' challenges to become real pilots, while the Earth faces the threats that come from space. (Source: ANN, edited by Falre)

The story of the anime is set in the year Mobile Century 8013. It has been over seven millennia since humanity was wiped out on Earth, but the surviving military robots continue to wage war with no end in sight. The war has embroiled the Rebellion Federation that controls Europe and the Principality of Shin centered in Asia. Three young robots stand up to put an end to this futile war. (Source: ANN)

In the kingdom of Highland, fairies lived freely until humans betrayed them. Once a fairy has been stripped of a wing, whoever possesses it holds the fairy's life in their hands. Taking advantage of this, humans enslaved fairies, but 15-year-old Ann Halford longs to see the day when fairies and humans are treated as equals. The aspiring confectioner dreams of becoming a Silver Sugar Master just like her late mother. In order to achieve this lofty goal, Ann sets out for the capital of Lewiston, home to the annual Royal Candy Fair. However, to be bestowed the elusive title, Ann's confection crafted from silver sugar must be recognized with a royal medal at the event. Ann hires a sharp-tongued warrior fairy, Shall Fen Shall, to be her bodyguard for the perilous journey ahead. After saving him from his cruel fairy trader, she promises to return Shall's wing to him once they reach the capital, much to his confusion. But as the pair travel further along, the time they spend together grows, and they learn more about each other and their true desires.