A toilet lady gets an undercover visit by a tax collector, who notices several infractions and sends her an invoice of more than 300.000 Euro. While in the public restroom, the tax collector also finds out someone has been dealing drugs and starts selling powdered sugar to the local junks, pretending it is cocaine. In the meantime, a serial killer has been trying to flush his victims' body parts down the drain.

After seven years of confinement in a psychiatric hospital for being declared insane after murder, Kristen is released on supervised parole by her doctor. As part of her therapy, she is allowed to return to the house where she committed the murder. However, a stalker living in the neighborhood appears to have it in for Kristen...