Jeff's rock band plays at a local party, and a cute girl asks them if they've ever thought about making a record. They decide they should, and set out to get enough money to buy recording equipment. They decide to sell shares of stock in their "record company" to all the kids at school. Howevever, things don't turn out exactly as planned.
A friend of the Stone family generously offers them the use of his lake house. Jeff sees an opportunity to gain popularity by using it for a fraternity party. Things quickly get out of hand and Jeff panics.
Jeff decides males are the superior sex and gets his friends to join him in proving that to the girls. Donna disapproves and enjoys seeing the young women make the boys see the errors of their ways, Jeff most of all.