After discovering a stash of adult magazines, Sally decides that the boys are sex mad. When David suggests they meet his daughter at the weekend, she decides to give them a talk on love and babies - but they draw the completely wrong conclusion!

When David suggests the boys meet his daughter Jane, visiting home from boarding school, Sally is worried they may make fun of her as she is quite plain. The three, in fact, get on like a house on fire, and the only trouble arises when David invites Sally to accompany him overnight in taking Jane back to school...

The time has come for the happy couple to meet their respective parents. Sally's already nervous, but reduced to a wreck when she discovers David's mother is a Lady - especially in comparison to her own parents' lack of social graces! But David has a very serious question to ask.