Mikaze and her team had an unusual setback during the Comet Blaster tests, resulting in their return to the Shimoji Island headquarters. On their return, they met three new Meteor Sweeper recruits who had taken on the role of instructors. While adapting to their new roles, they discovered more comets headed towards Earth. This led to questioning the unresolved doubts concerning the divide within the Cosmic Emergency Management Agency and extraterrestrial parasites.