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.
A trio of high school boys get summer jobs at a seaside resort. Soon, however, they learn that the woman who runs it is in financial trouble. The three decide to help her.
In this crime thriller produced by Toshiro Mifune (who has a supporting role), hard-boiled Shiro Akitsu goes on a relentless search for his abducted 7-year old daughter, with the aid of an Ainu dog summoned by a whistle she gave him.
