Toshiyuki, the nephew of the ama diver Yumi, visits a certain fishing port to check on her. Toshiyuki had been worried that Yumi might have lost her vitality since losing her husband a year ago, but he was relieved to see her naked body full of life when they met again... One day, Toshiyuki learns that Yumi is looking for a remarriage partner. She is being pursued by the men at the port one after another, but she hasn't decided on anyone yet. Just then, Yumi receives an invitation for a date on the boat from her favorite fisherman, Sasaki...
