In a warehouse area at night, a drunk chief engineer is stabbed to death by someone who whistles. After the break of dawn, two seamen join the crew of a rusty cargo ship Kaiyo Maru. One is a troublemaker with bad attitudes, Senkichi Nomura, who pursues an enemy in order to take revenge for his father's death. The other is Keizo Sasaki, a buff, eagle-eyed man on board for a certain mission.

Yūjirō Ishihara
as Senkichi Nomura

Rentaro Mikuni
as Keizo Sasaki

Ruriko Asaoka
as Akiko

Hiroyuki Nagato
as Goro

Hiroshi Nihon'yanagi
as Onizame

Shinichi Yanagisawa
as "Mom"

Kinshiro Matsumoto
as Ken

Jushiro Kobayashi
as Sanzo

Tōru Abe
as Matsu

Kō Nishimura
as Hikobei