Ray Marchand is married to an older woman but he is quite attracted to Nyla Foster, a very attractive college student spending the summer working at her father's fishing camp. She tells Ray that her father would never leave her alone with him - so he should stop by on Mondays, when her father goes into town for supplies. When Nyla hears that Ray's wife can't swim, they start thinking that an "accident" might be in order, so Ray decides to take up fishing, his wife's favourite pastime. His plans don't quite work out, however.
—garykmcd