Follows the exploits of Team Warrior, a special anti-terror wing of the Neo-Tokyo Police force. Team Warrior is comprised of the habitually broke Rio, gun-crazy Maya, computer specialist Lillica, tech-expert Nanvel, pilot/voyeur Yuji, and is led by the enigmatic Maki. The team faces a number of missions, ranging from bodyguard duty, breaking up robbery and arms rackets, and providing security for a very powerful tank. Rio and company continually thwart the terrorist aims of Ruby, an operative for a shadowy cabal of powerful men. Before the final showdown, the circumstances behind the formation of Team Warrior, how the precocious Rio came to join it, and Maki's painful past will be revealed.
A gate appears in Tokyo's Ginza district sometime in the 21st century. From the gate pours out monsters, knights from middle-age Europe, and other fantasy-like beings, and they kill many of the citizens of Tokyo. This event is known as the Ginza Incident. The government sends a small group of soldiers from the Japanese Self-Defense Forces to the alternate world beyond the gate. Led by otaku soldier Yōji, they find that the villages in the world are being attacked by a dragon. An elf girl who is a survivor from the dragon's rampage joins the group in their travels across the dangerous new world.
"Minimum" - a special inborn power found in a limited number of human beings, known as "minimum holders." In Yokohama, the detective team Hamatora, formed by two minimum holders named Nice and Murasaki, comes across information connected to a serial killer being pursued by their old friend Art. It turns out all the victims are minimum holders like them. Unwillingly at first, the two detectives become involved in the investigation.
In 1939, the imperialist nation of Germania launched a sudden invasion of its neighboring countries. This conflagration engulfed all of Europe in one fell swoop, and the era was dragged into the maelstrom of war. Then in 1940, Germania set its sights on Elystadt, a tiny principality blessed with breathtaking greenery and water in the Alps. Izetta is a descendant of a clan of witches who had passed down mysterious powers for generations. Since she was little, she and her grandmother lived their lives on the road, traveling between European countries in order to hide these powers. Fiine is the sole daughter in line to succeed Rudolph III, the ruler of the Principality of Elystadt. Since her father has been stricken by illness, she has been busy preparing for Germania's invasion in his stead.
The Krakozhia Dukedom and the Grania Republic are at war, and high school student Sōhei Yano wants no part of it. But when two Lieutenants show up in tanks at his door, his life becomes an exercise in dodging stray bullets!
Junior High student Jimon Asuta is in a fix. He had a big fight with his dad and was kicked out of the house. With no money and no place to live he shares the last of the food with an unusual little girl he encounters. It turns out she is Venera the Great, the leader of the secret organization Zvezda and committed to conquering the world. At first he thinks it is just a little girl's fantasy, but strange events with weird technology soon prove that Zvezda is, in fact, for real.