Autumn has arrived since the events of Magix Chevalier. While Ray and his friends are excitedly working on their school festival project, they receive news that Rebecca has become engaged to Evan Bernstein, a member of the upper class. Ray immediately goes to visit Rebecca to offer his congratulations, but he senses something is off about her distant demeanor. Furthermore, Dina Sera, who is suspicious of the engagement, entrusts Ray with looking after Rebecca, and Ray begins investigating Evan. However, behind this incident lies a larger scheme that Ray could never have imagined...