During a late night taping of Dr. Nasty's Cavalcade of Horror, bloody chaos takes place while screening two features (Dinner for Monsters and Slit). Samantha/Nurse Nasty is frustrated with how the show is being run by its womanizing director and its drunk and crazy host, Dr. Nasty.

A couple plots to murder a random stranger just for the thrill of it, but things turn ugly when one of them decides not to go through with it.

Bruce (Ry Barrett) is an ordinary repairman tormented by a crippling sense of responsibility for his disabled wife Samantha, an ex-policewoman (Tianna Nori), the survivor of a gang-related assault. Bruce's increasing hyper-sensitivity to the injustice suffered by his wife steer him down a dark path of vigilantism, and with his rapidly disintegrating mental health, paranoia and overwhelming sense of doom, Bruce channels his inner rage towards a young woman, Marie (Jessica Vano) and finds refuge in a world of extreme violence. Both a character study and a psychological examination of trauma, The Demolisher is an unapologetic portrayal of what can happen when a fragile mind is pushed too far.