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 is the captain of the Aircraft Carrier Ibuki and Toshiya Niinami is second-in-command. It is now 6:23 am. and Japan faces one day which they never have before.
as Ryota Akitsu, Captain of Ibuki
as Yuko Honda, (Net News P-Panel reporter
as Prime Minister Keiichiro Tarumizu
as Toshiya Niinami, Second-in Chief of Ibuki
as Kazuhisa Nakane, Senior Officer of Ibuki
as Commander Tsugeharu Yui
as Commander Shin Fuchigami
as Yohei Sakomizu, Captain of Albatross
as Nariaki Seto, Captain of Hatsuyuki
as Kazuma Todo, Senior Director of Yuko Honda
as Veteran reporter Shunichi Tanaka
as Keiichi Nakano, convenience store manager
as Keiji Wakui
as Shiori Moriyama, part-time clerk at a convenience store
as Masanao Katsuragi
as Toshimichi Ishiwatari, Chief Cabinet Secretary
as Sosuke Shiroyama, Minister for Foreign Affairs
as Masato Kakinuma, Pilot of Albatross
as Urata Tetsuto, Captain of Ashita
as Shuzo Yamamoto
as Mitsuhiko Arisawa
