Fifty years ago, scientists discover a group of comets that are on a collision course with Earth. To combat certain annihilation, the United Nations builds a base on Shimoji Island where we meet our young heroines and fighter pilots-in-training. Mikaze is a troubled trainee pilot for Meteor Sweeper team, who dreams of becoming a prestigious Comet Blaster pilot. Mikaze and her teammates' challenge is to become real pilots, while the Earth faces threats from outer space.