A scout ship "Flam" of the evil alien association "Space Syndicate" landed on the Earth and started kidnappings of people. The Planet Minority Galactic Federation Organization warned the Earth government and suggested creating anti-alien defense force. "Cross Changer" organization was created, but it was destroyed by "Flam". Surviving members have to sell information to evil organizations, but three girls Marie, June and May decide to fight on their own.

[From vndbreview]