Five vacationers and two crewmen become stranded on a tropical island near the equator. The island has little edible food for them to use as they try to live in a fungus covered hulk while repairing Kessei's yacht. Eventually they struggle over the food rations which were left behind by the former crew. Soon they discover something unfriendly there...
久保明
as Kenji Murai - Professor
水野久美
as Mami Sekiguchi - Singer
小泉博
as Naoyuki Sakuta - Skipper
佐原健二
as Senzô Koyama - Sailor
太刀川寛
as Etsurô Yoshida - Writer
土屋嘉男
as Masafumi Kasai - Owner
Miki Yashiro
as Akiko Sôma - Student
熊谷卓三
as Doctor (as Jirô Kumagai) (uncredited)
岡豊
as Doctor (uncredited)
Keisuke Yamada
as Doctor (uncredited)
草間璋夫
as Police Personnel (uncredited)
日方一夫
as Police Personnel (uncredited)
