Stratos 4 Advance

Mikaze and her friends are unexpectedly sent back to the Shimoji Island base after failing the Comet Blaster exams under mysterious circumstances. Upon their return, they are promoted to instructor positions, tasked with guiding three new Meteor Sweeper trainees. As they take on their new roles, the Earth is threatened by an influx of approaching comets, and the enigmas surrounding the rift within the Cosmic Emergency Management Agency begin to unravel, shedding light on the mysteries of the alien parasites.