Takayama Naoto is a high school second-year who dreams of being a train conductor. In hopes of getting a job with Japan National Railways, one of the most stable businesses in Japan due to government support, Naoto has applied to an on-the-job training program for students.

Naoto and the others managed to fight off their attackers on the Hokutosei, but while on the run, Naoto and Bernina find themselves under attack again. This time it's Aoi who comes to the rescue after catching up with them in Sendai via the Tohoku Shinkansen. Just as he breathes a sigh of relief, Naoto's phone rings...