After coming across an advertisement about how anyone can lead an invasion force, young Don decides to establish a ragtag squad of his own to conquer the cosmos. Working alongside him are the aloof Pepu and the gaming-obsessed Chiku, though the value of their membership remains somewhat questionable. With his two henchmen by his side, the crew's inexperienced leader sets his sights on their first target: Earth. According to the manuals, Earth should be a simple enough target, but the situation spirals out of control right from the start. As it turns out, convincing over seven billion humans to simply roll over and accept their new overlord is no easy feat. Having been blown off by the entire human species, Don and his squadron touch down on Earth and begin their search for a way to subjugate humanity. However, with their unexpected failure, they face more pressing issues—namely, finding food and paying rent—so their plans for galactic domination will have to be put on hold for a little longer.

After the events of Kimluck, Orphen is on a quest to find Azalie, only to find himself in a war in between celestial beings and humans.

The stage is set on a moon of Planet Cray, Aniversario. To develop the moon, Selca summons Aichi, Chrono and friends. A large undertaking by familiar vanguard characters! (Source: Official Site)

The story takes place in a time when the world is in the pits of despair after being ravaged by a poison called shinobi that came to earth via an asteroid. The people run away to the place called Kairiku, a place that used to be the bottom of the ocean. Here, the people try and protect themselves against the effects of the poison. In such a world, there was a single light of hope. The Holy Weapon Giga Road and the legendary warrior Yagyuu are needed in order to counter the effects of the poison. In order to save the world, Ame, a princess of a fallen nation, stands up in order to save the world. (Source: ANN)