It is the year 2095, and Tatsuya Shiba and his sister Miyuki enroll at the First Private Magic University Affiliated High School, but due to the difference in their grades in the practical exam Miyuki is placed in the Course 1 curriculum with the other students who have demonstrated high magical skills, (informally known as "Blooms") while Tatsuya, on the the other hand, having scored poorly on the practical exam is assigned to the Course 2 curriculum (insultingly called "Weeds" by Course 1 students) even though he placed first in the theoretical exam. Tatsuya becomes acquainted with several Course 2 students including Eriko Chiba, Leo Saijo and Mizuki Shibata. The chasm between the Weeds and Blooms leads to a confrontation when a number of Miyuki's classmates object to her hanging around with her brother and his new friends. Violence seems imminent but Tatsuya is able to disrupt the magic sequences just as the student council president and chair of the disciplinary committee arrive.