After a passenger ship sinks in 1954, Go Akutsu devises a life-saving project in the form of a tunnel under the Tsugaru Strait. While working on this project Akutsu becomes involved with Tae Makimura leading to his estrangement from his wife.
| Actor | Role |
|---|---|
 Ken TakakuraGo Akutsu | Go Akutsu |
 Sayuri YoshinagaTae Makimura | Tae Makimura |
 Tomokazu MiuraSenta Naruse | Senta Naruse |
 Naoko OhtaniKayoko | Kayoko |
 Hiroko IsayamaOren | Oren |
| KKyoko AokiNot listed | Not listed |
 Susumu FujitaNot listed | Not listed |
| MMasakazu KuwayamaNot listed | Not listed |
 Nenji KobayashiNot listed | Not listed |
| EEishin TonoNot listed | Not listed |
 Hatsuo YamayaNot listed | Not listed |
 Kazuo KitamuraNot listed | Not listed |
| TTakeo NamaiNot listed | Not listed |
 Kazuo KatōNot listed | Not listed |
 Akiji KobayashiNot listed | Not listed |
 Kōen OkumuraNot listed | Not listed |
 Masanobu ŌkuboNot listed | Not listed |
 Yūsuke TakitaNot listed | Not listed |
| SSumio TomikawaNot listed | Not listed |
| SShogen NittaNot listed | Not listed |
| IImari TsujiNot listed | Not listed |
 Moeko EzawaNot listed | Not listed |
| JJunnosuke HiramitsuNarrator (voice) | Narrator (voice) |
 Eitarō OzawaNot listed | Not listed |
 Hideji ŌtakiNot listed | Not listed |
 Chishū RyūSaiji Akutsu | Saiji Akutsu |
 Hisaya MorishigeGensuke Kishida | Gensuke Kishida |
 Katsuhiko NakagawaOsamu Akutsu | Osamu Akutsu |