On an ordinary evening, college student Kei Kurono (played by Ninomiya Kazuya) reunites with his junior high school friend Kato Masaru (played by Kenichi Matsuyama) at a tram station. In order to save a man who fell on the tracks, the two of them were violently hit by a tram. However, in the blink of an eye, they came to a closed room unscathed...