A hobby-psychologist (Markus Knuefken) runs the pirate radio ‘Nighthawk’ from the basement of his house, and every night he goes “On Air” as the infamous Doc Rock. As the nights before, the topic again…is the killing spree of the so-called “Night-Slasher”. By giving him bad names, questioning his sanity, and challenging him “How hard can it be to stop him from killing the next victim”, Doc is in for a big surprise. Seconds later “The Night-Slasher” calls in, challenging him “To put his money where his mouth is”. Doc Rock is rocketed into a quandary over whether to stay “On Air” or not…but his cunning, evil opponent leaves him no choice. The struggle is ON…AIR…and the chance for survival depends on Doc Rock’s conscience which is being relentlessly forced to spill its guts…to unleash the monster lurking inside of each and everyone of us…to disclose the frightening, sad truth: “The ego is not master in its own house”.