In the second season of Mobile Suit Gundam: the Witch from Mercury, set in A.S.122, the narrative unfolds in an era brimming with corporate ventures in space, forming a vast economic framework. Suletta Mercury, having shifted to Asticassia School of Technology from Mercury, immerses herself in a dynamic school life. She grapples with encounters and thrills, navigating her roles as Miorine Rembran's betrothed and a member of GUND-ARM, Inc. Following the Plant Quetta incident two weeks prior, Suletta eagerly awaits her reunion with Miorine, while Miorine closely monitors her father's well-being from the Benerit Group's headquarters. As they brace for fresh challenges and crucial choices, both harbor distinct emotions in their hearts. United by fate, the girls stand together to confront the formidable curse entwined with the Gundam.