On April, 6th 2005, in Makurazi, Kagoshima, Makiko Uchida seeks a boat in the local fishing cooperative to take her to the latitude N30, longitude L128, where the largest, heaviest and most powerfully armed battleships ever constructed Yamato was sunk on April, 7th 1945; however, her request is denied. She meets by chance the captain Katsumi Kamio of the fishing vessel Asukamaru and discloses that she is the stepdaughter of Officer Nagoya Uchida and Kamio immediately accepts to take her in the risky journey. While traveling with Makiko and the fifteen year-old Atsuchi, Kamio recalls and discloses the story of Yamato and his close friends that served on board of the battleship until the final suicidal mission in Okinawa. When they reach the spot where Yamato was sunk, he considers that he finally reached the end of the Showa era.