CW 273 is The Crypt, Episode 1, and stars Tia Rossi as the anthropology professor, and Sarah Blake as her rebellious student.  Lyla Lei, Mika Tan, and Lily Thai also appear in non-sex roles.
Teacher Tia and student Sarah's quarrel escalates early and fast as young Sarah challenges Tia's authority.  Push comes to shove as quick as hair pulling turns to kissing, and a struggle for power evolves into a sexfight in no time at all.  Oral sex, manual manipulation, and hot kissing drive this match between two intense sexual partners.
And this is only Episode 1!