The Earth has a powerful safeguard in place to protect against massive incoming meteors. This defense includes Comet Blasters stationed in various space stations, which serve as the first line of defense by launching nuclear warheads via spaceships. If necessary, the second line of defense is activated - the Meteor Sweepers, which can be traced back to ground airbases. These sweepers use hypersonic planes equipped with specialized missiles to eliminate any remaining debris from the explosions. Mikaze is the main character in the show Stratos 4, a nervous young girl with a dream of becoming a Comet Blaster pilot, currently training with a Meteor Sweeper team. The series follows her and her teammates as they overcome challenges to achieve their goal while the Earth remains at risk from space dangers.