Whilst Peri is enjoying a day out, the Sixth Doctor pops round to a dance instructor's studio for tuition in the art of the waltz. She initially declines, maintaining that she has a full class of children to teach. The Doctor returns the next day, having bought off all the parents. Now her only possible student, she begins to teach him. He learns very quickly and soon progresses to the foxtrot. Along the way, Becky reveals that much of the joy in her life has been sapped by her loveless marriage to David. When she announces that she has fallen in love with the Doctor, for he has been the first man to care about her ambitions in a very long time, the Doctor decides that he had best exit her life so as not to cause her further pain.