A college student who works night shift as a phone sex operator finds her callers quite boring until she gets a frequent caller who only wants to talk. Immediately hit by the chemistry, the two eventually grow a sexual-over the phone- relationship. When Ada finds out it's her attractive professor who's been calling every night, she takes it upon herself to build a relationship with him but her guilt builds up and she wants to tell him. Her plan is ruined by a small slip up which throws them into tension filled classes and public bump-ins.