Twenty-five years after Éclair and Lumière (from the flagship Kiddy Grade series) saved the galaxy from annihilation, the GTO (Galactic Trade Organization), formed following the defeat of the GOTT (Galactic Organization of Trade and Tariffs), fights crime on behalf of global peace. Their unique ES section, which is modeled after the GOTT's ES (Encounter of Shadow-work) force, currently comprises publicly recognized ES member applicants. The series follows two of these recruits, Ascoeur and Q-feuille, as they make their way through the ranks of the ES.