In the Universal Century 0079, Oliver May serves as a technical officer within the Zeon 603rd Technical Evaluation Unit, responsible for evaluating experimental military equipment. Assigned to the Jotunheim, a converted civilian vessel turned military, Oliver finds himself thrust into the turmoil of the One Year War. Amidst the chaos, he grapples with the challenges of influencing a war's course as a mere weapon tester in a rapidly shifting conflict landscape.