The game begins when the 5 girls go to Chiyo's and when they enter the house a news emergancy broadcast goes on. It says that there will be a alien invasion happening. Tomo thought it was just a prank until a laser beam destroys part of Chiyo's house. The girls are devestated on the destruction of the city. When the alien robots are too much for the army the girls decide to go on a epic adventure to save the world.