E Class prepares for a class trip to Kyoto, which is also being used as a venue to assassinate Koro-sensei with the assistance of a government hired sniper. Arranged into groups, Nagisa is joined by Kaede, Karma, Sugino, Manami, and class idol Yukiko Kanzaki. On the train ride to Kyoto, some delinquent high school students steal Yukiko's itinerary detailing what her group will be doing. The next day as Nagisa's group take in assassination landmarks of Kyoto, they are ambushed by the delinquents, who knock the boys out and kidnap Yukiko and Kaede. Whilst in captivity, Yukiko laments how the pressure from her parents to be perfect drove her to sneak out and have fun, which in turn led to her ending up in E Class due to slipping grades. Meanwhile, Nagisa and the others manage to use an extensive guidebook written by Koro-sensei, which explains in detail what to do in a hostage situation, to deduce where the girls are being held before Koro-sensei arrives to deal with the delinquents. Following the incident, Yukiko feels encouraged by Koro-sensei's words that regardless of situation or status, those with the will to drive forward will come out strong.