Things heat up between Brenda and Dylan and they soon start dating, causing differing opinions in the Walsh house. When sex becomes an option, Brenda learns that he may be too intense for her. Meanwhile, the gang begins Sex Education in Health Class and Scott has trouble getting his mother to sign the consent form. Steve attempts to hook up with Stacy Sloan, the class' speaker. Later on, everyone attends an AIDS seminar and listens to Stacy's speech based on her own experience and condition.

Brandon gets an unexpected taste of fatherhood when he starts dating a scholarly senior with Ivy League ambition named Melissa and then has to baby-sit her infant son while she has a college interview. Brenda and Kelly win a radio contest and get skydiving lessons, but her parents refuse to allow her to go.