Stratos 4 Advance

In a world where the threat of comets looms large, Miharu Oozora's experiences with the Comet Blasters lead the Cosmic Emergency Management Agency (CEMA) to rethink their approach to interception missions. Realizing the limitations of human pilots, they decide to revive an old program focused on unmanned shuttlecraft, setting the stage for groundbreaking trials. Meanwhile, on Shimoji Island, Mikaze and her friends are eagerly preparing to take their pilot licensing exams as a new generation of recruits arrives at the base.

As tensions rise, a crisis unfolds when one of the orbital bases experiences critical failures, triggering an urgent rescue operation. CEMA finds itself at a crossroads, grappling with internal conflicts while the deeper mysteries surrounding the comets begin to come to light. Amidst the challenges of military life and unexpected developments, the characters navigate their ambitions and friendships in a setting where both human ingenuity and technology are put to the test.