In the first scene the Headmaster has called the mathematics teacher, Hannah, to his office for a private talk. In meetings, Hannah has vehemently opposed the Headmaster's research project to develop a mind control drug for the government. She has convinced the school's Director that what the Headmaster is doing is dubious at best, and the Director has only allowed it to continue, albeit reluctantly, because of the size of the grant it has received. The Headmaster now asks Hannah why she is so against the project and tries to change her views, pointing out that the world needs a new serum for mind control to keep the more dangerous elements of society in check. Hannah says that she sees his work as an infringement of human rights and cannot condone it. She says she has had enough and is going to talk to the school's Director to persuade him to put a stop to the Headmaster's research once and for all. As she turns to leave, the Headmaster panics hits her over the head from behind and she falls to the floor. When Hannah recovers, she finds herself tied to a chair. She struggles to get free to no avail. The headmaster enters the room with a bottle of fluid and a syringe. He tells Hannah that he knows her secret identity, that she is in fact The Dark Avenger. Hannah denies this so he holds up a photograph of Hannah in the costume without a mask, filmed by a hidden camera in Hannah's office. The Headmaster tells her that after she is given his experimental mind control serum, she will work for him. Hannah says "never" and struggles to get away, but she is helpless to resist. The serum takes effect in a matter of seconds, and when asked by the headmaster if she will obey him, Hannah says she will. The Headmaster then tells her that she must assist in his plans to remove the Director from office by tarnishing his reputation. Hannah is to plant some compromising photographs in the Director's home and, after he anonymous tips off the local authorities, she must burst in to his house as The Dark Avenger and reveal the evidence to the world. Everyone will believe the superheroine and the Director will be removed from office. Hannah agrees to do this, unable to resist the control of the serum.

Unfortunately for the Headmaster, there is a student who is on the Director's side: Justice Girl. She has been watching the Headmaster for some time, her suspicions aroused by his secretive behaviour. She follows The Dark Avenger to the Director's home and watches her enter the house with a large envelope in her hand. After a few minutes, The Dark Avenger emerges without the envelope. Justice Girl enters the house and searches for the envelope. She finds it and discovers inside the compromising photographs of the Director with one of the school's female students (the photos are fake, but they will be enough to cast doubt and have him removed from office). Justice Girl is about to leave the room with this evidence when she comes face to face with The Dark Avenger, who returned after seeing Justice Girl enter the house. Justice Girl challenges The Dark Avenger, waving the envelope at her and asking her what she is doing. The Dark Avenger is known as a force for good, so why would she try to destroy the reputation of a good man? By way of an answer, The Dark Avenger attacks Justice Girl and the two get into a serious fight (3-minute sequence). However, The Dark Avenger is not fighting with her usual skills - she touches her brow because she has a headache, a side effect of the mind control serum. She tries but cannot fight its influence and continues battling with Justice Girl. Finally, Justice Girl pulls off The Dark Avenger's mask and is shocked to discover that it is her mathematics teacher, Professor Perez. Her surprise incapacitates her for a few seconds, during which time the headmaster sneaks up behind her and presses a cloth to her nose and mouth.

Justice Girl wakes to find herself is tied to a chair. The Headmaster instructs The Dark Avenger to wait until he is well away from the house and can establish an alibi for his whereabouts, then he wants her to burn it down with Justice Girl inside. The Dark Avenger struggles with this but is compelled to obey. When the Headmaster has departed, The Dark Avenger torments Justice Girl and finally unmasks her. When she recognizes Jasmine, one of her students. Learning the identity of her opponent helps Hannah to overcome the mind control serum a little more, and she starts to question what she is doing. Instead of setting the fire, she makes a move to untie Justice Girl. The Headmaster, aware that the serum has not been effective on The Dark Avenger, has quietly returned. He moves up behind The Dark Avenger, cloth in hand. "How disappointing," he mutters. "Clearly, my serum needs more work. But I can hardly continue my research with you two meddlers in my way." He ties up The Dark Avenger then goes out to his car and returns with a device that will solve all of his problems. "How long shall I give you?" he asks the girls while setting the timer. The headmaster decides that ten minutes should be enough and leaves. The Dark Avenger and Justice Girl both struggle to get free in time to avoid being blown up.

30 minutes 57 seconds - 1280x720 pixels - WMV: 737.7 MB