The story follows Daichi Meguru and Mayu, a young boy and a pilot, as they flee their war torn planet and into space. Upon their ship a stowaway android named Zero joins their quest as they travel through Halley's Mirror. (Source: Wikipedia)

The 21st century was supposed to mark the beginning of mankind's golden age of space travel. However, humanity's lingering dreams of the stars are shelved when Earth suddenly comes under attack by alien entities. Trampling across the planet's surface, these giant invaders leave nothing but death and destruction in their wake. Having suffered personal losses from the invasion, Takuto Kaneshiro joins the fight against the extraterrestrial enemies. In his quest for vengeance, the disillusioned young Takuto must seek out any possible allies, but the line between friend and foe is dangerously thin. When old powers crumble and new opportunities arise, many are prepared to capitalize on the chaos. Takuto soon realizes that the aliens may be the least complicated obstacle to uncovering the greater truth behind the catastrophic invasion.

Big Battle is a one-shot OVA set after the climax of the original Votoms storyline, but before the epilogue at the end of the series itself. With the Gilgamesh and Balarant forces still trying to advance their PS programs, Chirico and his old friends are forced into one last gladiatorial battle against a special PS and a formidable land battleship.

​On the island of Regalo, a group of supernaturally powered mafia-like protectors called the Arcana Famiglia safeguard the people from any who would harm them. The members of their organization, having made contracts with tarot cards, each possess different abilities, such as overwhelming strength, invisibility, or the power to see into someone's heart. Mondo, their leader and the Papa of their family, announces at his birthday party that he will be retiring soon. He plans to hold the Arcana Duello, a competition that, if won, will grant the winner the title of Papa and any wish they desire. But there is more at stake than just a title: Mondo also decides that the winner will marry his daughter, Felicità. Enraged by this, the strong-willed Felicità decides to enter the competition herself, in order to make her own way in the world. As Felicità battles for her freedom, her competitors battle for her heart.