In a distant galaxy ...

The two largest factions - the Republic of Naba and the Empire of Dago have long been in a state of "cold war"
after two large-scale wars. For the sake of peace, the government of Nabi sends an espionage group called Diva, to Dago.
Diva consists of specially trained girls. Their experience in espionage activities, physical battles and murders makes them the key to preserving peace.
At this time, one of the agents of the Diva, Nous, is on assignment on the planet Col Earth. She gets a message from her old friend Lynn.
Here begins her adventure.