The new female Doctor leaves her TARDIS, faints, and is kidnapped by a sex slavery ring! She must now use her wits to escape, and possibly rescue a fellow sex slave to serve as her new Companion.
The Doctor will now have a new weapon: Her sex appeal! I expect to see her use it to distract enemies or recruit allies when she has to escape. I don't recall ever seeing the MALE Doctor use sex appeal as a weapon!
I do remember Captain Kirk using HIS sex appeal to his advantage! He was a real magnet for alien women!