Target Earth (1998)

A young girl returns home after being abducted - and that's pretty much the story! This flick is filled with all sorts of sci-fi surprises - big implants, an FBI investigation and a possible alien part. The aliens want to take over Earth by activating hidden technology inside breast implants at a particular time in a coordinated attack, using guided sonar sound to give the population mass constipation so nobody can resist the invasion. But there's a catch. Some people are deaf.