In the year A.S. 122 (Ad Stella), numerous corporations have ventured into space and created a vast economic infrastructure. Against this backdrop, Suletta Mercury, a solitary girl from the faraway planet of Mercury, enrolls at the prestigious Asticassia School of Technology. The institution is led by the Beneritt Group, a dominant player in the mobile suit industry. Despite being a newcomer, Suletta fearlessly forges ahead, with a fiery passion in her heart. As she enters this uncharted territory, she takes steady strides in exploring this brave new world.