Mai Ly is a school girl who is very dissatisfied with the D-minus she received on her physics test, so she decides to approach Principal Sage at her home about getting the grade improved. Principal Sage lets the girl into her home to talk with her, but is not cooperative when it comes to going over her colleague's head and giving the girl a better grade, especially when Mai Ly admits that she didn't really do the work she was set. When it becomes apparent that Miss Sage is not going to help her, Mai Ly produces a syringe from her purse and grabs the Principal, dragging her to the floor. Once the woman is senseless, the student sets about tying her up, intending to keep her prisoner until she agrees to give her an "A". When Miss Sage recovers and starts protesting, Mai Ly gags her, then sits down in an armchair waiting for the woman to change her mind. The wait is rather a long one and Mai Ly falls asleep, and as such does not witness Miss Sage freeing herself from her bonds. The principal creeps into the kitchen and produces a pack of very heavy-duty zip ties from a cupboard, something she likes to play with when her significant other is visiting, but now they have a more immediate purpose - to keep Mai Ly here until the police arrive and arrest the girl for her criminal act. Mai Ly does not go down easily, however, and a long fight ensues as Miss Sage struggles to get the zip ties on the girls ankles and wrists. She finally succeeds, then settles down to watch over the girl until the authorities turn up