Bakumatsu High School Student

In 21st century Japan, the new generation is indifferent to academics and shows little interest in historical anecdotes from hundreds of years ago. Kawabe Mikako (played by Satomi Ishihara), a high school teacher, can only go through the motions with these students, getting by in a perfunctory manner. One evening, Mikako gets caught up in a dispute between students Takase Masaya (played by Shigeo Takahashi), Morino Eri (played by Haruna Kawaguchi), and Numata Shintaro (played by Yudai Chiba), and is then engulfed by a strange light that pulls her into the chaotic currents of time, transporting her to late Edo period Japan. At this time, the Satsuma-Choshu forces are advancing on Edo, and the militant faction led by army vice president Yanagida Ryuzo (played by Akira Emoto) is determined to fight to the death to protect the Tokugawa family, while army president Katsu Kaishu (played by Hiroshi Tamaki) sends a secret letter to new government strategist Saigo Takamori (played by Koichi Sato) in hopes of facilitating a bloodless surrender of the city. The arrival of Kawabe and her students seems to disrupt the course of history, and Edo is on the brink of being engulfed in a sea of destruction...