Sam wakes on the morning of her wedding and contemplates the married life ahead of her. Before she can collect her thoughts, however, Peggy arrives home in dramatic fashion and sets about organising everyone and everything. And when she meets the new residents of the Square, she invites them all to the wedding. Meanwhile, Billy persuades Minty that he should tell the formidable Peggy the truth about Andy's past. Minty races to the church - but is it too late?