
A Certain Scientific Railgun
The Daihasei Festival is under way and the prestigious Tokiwadai Middle School, where the Ace of Tokiwadai, Mikoto Misaka reside, is one of the schools participating in this annual sports fest. However, not all are fun and games as people behind the shadows start to plot a new threat that will endanger Mikoto and the whole Academy City. After the Daihasei Festival, Mikoto and her friends find themselves being involved in multiple incidents surrounding special cards that supposedly record people's dreams.
Academy City's Daihasei Festival is approaching, and the festival's steering committee is charged with recruiting at least two Level 5s to take the athlete's pledge during the opening ceremonies. However, getting volunteers proves to be a challenge.

As the Daihasei Festival begins, Uiharu and Saten enjoy themselves, while Kuroko sees to her Judgment duties. Mikoto and Kongo run an eventful three-legged race against teams from other schools. A plot involving MEMBER begins going into motion.
Kuroko continues searching for Kozaku, but after exhausting every possible hiding spot in the building, she must reexamine her situation. When Mikoto's transformation hits a critical threshold, it is time for Gensei to unlock Exterior's limiter.