The story takes place over a 24 hour period. In the southernmost part of Japan, 20 fishing boats of an unknown nationality suddenly fire upon and occupy parts of the Hateruma archipelago. Members of the Japan Coast Guard are detained. Under the extremely tense situation, the Japanese government sends Aircraft Carrier Ibuki and an escort fleet to the area. Ryota Akitsu (Hidetoshi Nishijima) is the captain of the Aircraft Carrier Ibuki and Toshiya Niinami (Kuranosuke Sasaki) is second-in-command. It is now 6:23 am. and Japan faces one day which they never have before.

Japan in the 19th century. A poetic love story far beyond any other samurai movie stereotype…

Set 10 years after “Kids Return.” Shinji and Masaru have graduated from high school with different paths in their lives. Shinji attempted to become boxer and Masaru a yakuza. They both tried to rise to the top of their respective fields.

Private Detective Kiyoshi Mitarai (Hiroshi Tamaki) and Miyuki Ogawa (Alice Hirose) arrive in Fukuyama, Hiroshima Prefecture. They are interested in a case which involves discovered bodies. The bodies were found drifting in the Seto Inland Sea, where the currents repeat every 6 hours.