Andrea and Jesse's impromptu engagement leads to tension in the Zuckerman household, which upsets the pregnant freshman. How can she marry without the support of her parents and her grandmother? Donna tries to make up with David, whose increased drug use turns her away. David also steals $150 from Mel to buy more amphetamines for himself. Later, when David's drug dealer is arrested, he finds himself holding a huge stash of narcotics and calls on Dylan for help who makes a solo intervention to make David choose to quit drugs or end up in jail... or a coffin. A dangerous affair begins between Brandon and Lucinda, while her true colors are shown when she begins teaching an anthropology class of human sexuality and preaches the need for multiple partners for she sees sex as her own personal weapon. Also, Brenda gets a surprise visit from a long-absent Stuart on Valentine's Day.