An ordinary, run-of-the-mill salaryman, Satake Hirofumi, goes on a cruise with his business client, Kito Joji. They spend a fun time out on the sea, but the cruiser gets destroyed when a whale crashes into it. Satake and Kito evacuate on a lifeboat, but they're adrift alone in the Pacific ocean. Provisions and water gone, they're on the verge of death. The only thing left in Satake's hand was a gift from his fiancée, Negishi Chie: A lucky coin pendant.
The most important rule in 
surviving at sea is, "Never drink seawater."
القاعدة الأهمّ للصّمود في البحر هي
"لا تشرب من مياه البحر"
Die oberste Regel für das Überleben
auf hoher See lautet:
Para sobrevivir en el mar,
lo importante es no beber agua salada.
Para sobrevivir en el mar,
lo importante es no beber agua salada.
La règle ultime
pour survivre en mer
La regola più importante per sopravvivere
in mare è "Non bere mai acqua marina".
A regra mais importante para sobreviver
 no mar é "não beber água do mar".
Первое правило выживания в море гласит:
«Ни за что не пей морскую воду».