To rescue Haruka, Naoto Takayama disguises himself in Prince Bernina's royal garb while the real prince is escorted away in a JNR uniform.

Following an attack on the Hokutosei train, the episode focuses on a hostage crisis involving the K4 peacekeeping squad.

This episode concludes the "Trap Prince" storyline and leads directly into the series finale. Rail Wars! (Episode 11: Be Grateful; I'll Go With You)

Aoi Sakurai and Shou Iwaizumi engage the terrorists to secure Haruka. However, the struggle leaves the train's controls destroyed, forcing the team to decouple the cars from the runaway locomotives to bring the passengers to a safe stop.

Critics noted the episode solidified Aoi's status as a primary romantic interest for Naoto over Haruka.