The game adopts star warfare theme where you have to fight against the enemy on a space station. The main character is Ayame Hayashi. She lives in the space station as a warrior to maintain that the station is safe from the enemy threat. While the enemy going out to her station base, her army just left her with 2 others (her senpai and her kohai) in that station for supporting the headquarter station to attack the enemy headquarter. But, because of miscalculated from the general, Ayame's station is being target by the enemy.

In the first level, you have to defend the station until the reinforcement come. You can kill the enemy by dual sword or unarmed instead. For users good experience, this game not only adopt a good story, theme or model and animation. But, also has variant effect while you using Ayame's dual sword.