7x14 - Buffy the Vampire Slayer

Buffy accepts an invitation to dinner from Principal Wood, and the secrets of his past are revealed. Xander impresses a beautiful girl with his knowledge of rope, and she seems to be interested in tying him up. Meanwhile, the First contacts Andrew in another attempt to destroy the Potentials, and Giles finds himself tongue-tied with the new Potential, Chao-Ahn.