October 31, 2095. An unobserved strategic-level magic destroyed the military city and fleet at the southern tip of the Korean Peninsula. Since the day known as "Scorching Halloween", the world has been shaken by the appearance of a new strategic-level magician. Among them, the United States of North America (USNA), which has the "world's strongest magic force" STARS, feels a growing sense of crisis and actively acts in secret to reveal the true identity of the unobserved strategic-level magic and the magician who uses it. About two months later, on December 24. Just as the whole city became bustling with Christmas decorations and lights, Tatsuya and others gathered in Eni Bliche to send off Shizuku who was about to go to the United States for exchange studies. Shizuku's stay in the United States is three months. According to Shizuku, the girl who came to the First High School with her on exchange is her own age. At the same time, at the STARS base of USNA, a girl is preparing to go to the First High School to conduct an infiltration investigation. Her name is Angelina Kudu Shields. As the youngest captain-general in the history of STARS, she is the strongest magician in USNA who controls the strategic-level magic heavy metal explosion.