A Pacific cruise liner sinks leaving only 3 survivors David, Darren and Daisy. They swim to a small island where they live for a couple of years doing what comes naturally, but, Daisy feels so guilty about having sex with both men, she kills herself. Sad for David and Darren but they get over it and agian nature takes its course.
After a couple more years the the lads feel really bad about what they are doing so they bury her.