Jill comes home to find her brother and her cousins having sex. When sneaking into her room she discovers their parent having swinging sex and acting out fantasies. She plans a birthday party for her dad where he takes her virginity thinking she is someone else.
Donald was confused, his sister had a letter from school informing his mother that he had failed a subject. A subject from last semester in which he scored an 'A'.
Twins Jason and Julie are stuck at conservative, religious, same-sex boarding schools. They are so horny that they devise a plan to secretly switch places to satisfy their desires. A good time is had by all, but with both student bodies having only rumor to guide them instead of accurate sex education, there are complications.
Tom is a highschool senior whose sister, Pam, has been gone off to college for two years. On a visit home, Pam has a date with her former boyfriend, Rod, to try to rekindle an old romantic flame. When she comes home, she's frustrated, she finds Tom jacking off to a porn film, and she suddenly lets Tom know what she wants.