Asian Drama

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.

The story alternates between the past and present, linked by a fateful song. During World War II, Japanese submarine I-77 battles an American destroyer off the coast of Okinawa. Before heading to war, the captain received a final present from his lover, the score to a song titled Manatsu no Orion. Sixty-four years later, his granddaughter discovers the score and the significance behind the song.