During the Christmas party in her apartment, Joyce Stone (Valérie Valois) welcomes the stepbrothers Helena Monet (Liliana Komorowska) and Alex Monet (Steve Parrish), who is her boyfriend. Alex's best friend asks him to demonstrate his abilities of scanner and during his demonstration, Alex is distracted by a guest and accidentally kills his friend. Alex is considered non-guilty but decides to travel to a monastery in Thailand to learn to control his powers.
Two years later, Joyce and Helena are attacked by a gang in an alley and Helena activates her ability of scanner to save them. She has a severe migraine associated to the sound of voices and her stepfather Elton Monet (Colin Fox) shows an experimental EPH-3 patch that he is developing in his company to be used in scanners. Helena offers to be the guinea pig, but he does not accept the offer since he is still studying the side effects. During the night, Helena opens his wallet and secretly uses the EPH-3. Immediately her migraine disappears and she feels good; however her personality changes to an evil person. She humiliates her boss Mark Dragon (Peter Wright), who is the owner of the TV network where she works, and later she destroys him to assume the control of the television; she kills Elton to assume the control of his company and research; she kills Dr. Baumann (Harry Hill), who conducted painful experiments on her when she was a teenager. Meanwhile Alex's lawyer and friend Michael (Daniel Pilon) travels to Thailand to warn Alex about the changes in Helena but he is murdered by a scanner sent by Helena to follow him. The Monk (Sith Sekae) gives a final training to Alex and he returns home. Will Alex succeed to control Helena?
"Scanners III: The Takeover" is not a bad movie as indicated in the IMDb Users Rating; actually it is a good sequel of Scanners. The plot is well constructed through a tight screenplay; the story has a great villain; the acting is reasonable for a movie directly released on video. The transformation of a sweet woman into a powerful villain is a great idea and there is also humor, like when the gang is thrown into the garbage truck or her boss dancing in the restaurant; or Alex waking up and walking in the morgue. My vote is six.
Title (Brazil): "Scanners III - O Duelo Final ("Scanners III: The Final Duel")