After an explosive encounter with a powerful magic user, Megumin informs her parents that she wants to study explosion magic at the Crimson Demon magic academy called the Red Prison.

Komekko discovers a furry four-legged dinner that Megumin ends up adopting, before the Red Prison conducts a questionable educational exercise.

An unproductive study session results in Megumin and Yunyun having nothing better to do than try and improve Bukkorori's love life.