A 60-year-old man has lived with a 16-year-old girl on a boat afloat in the middle of the sea for 10 years. The old man crosses days off of a calendar and counts the remaining days to her 17th birthday. She is content with her life, helping the old man serve the fishermen who come to the boat. When a gentle college boy comes aboard to fish, their relationship begins to suffer. As she becomes more and more attracted to the boy, she begins to distance herself from the old man, arousing his jealousy.