You're expecting a straightforward sequel about comet defense. Instead, the show treats failure as the only honest starting point, these characters don't get to be heroes, they get demoted to teaching kids while the real conspiracy moves underneath their feet. The comedy never stops, but it's doing actual work, buying time while the alien parasite mystery builds into something that rewrites what the first series was really about. This is a six-episode OVA that trusts you to notice the shift happening in the background.
Mikaze and her elite comet-defense squad return to Shimoji Island base after a shocking exam failure, only to find themselves reassigned as instructors for a fresh batch of Meteor Sweeper recruits. The promotion stings, especially when their new charges prove just as chaotic as they were starting out. Between managing inexperienced trainees and dealing with personal frustration, the team faces a bigger problem: dangerous comets are heading toward Earth again, and something's wrong within the Cosmic Emergency Management Agency itself. Strange alien parasites lurk in the shadows, and the answers behind these threats run deeper than anyone expected. What starts as a comedic training scenario spirals into something far more complicated. The squad must balance their new teaching duties with uncovering the conspiracy threatening their organization, all while the clock ticks toward the next cosmic disaster. Humor clashes with genuine danger as old rivalries resurface and the rookie instructors realize they might be in over their heads, both as educators and as humanity's last line of defense.