Susan Holland is a suburbanite woman who plots to kill her wealthy husband Paul in order to collect his life insurance policy. Though Susan's adultrous lover, Sam Meyers, she hires two incompetent criminals, named Bill and Steve, to kill Paul and make it look like a mugging gone wrong. However, when Bill and Steve show up as expected and shoot Paul outside his car in a parking lot, Paul survives and is taken to the hospital. Undaunted, Susan insists on continuing with her plans to kill Paul by having hiring a biker, named Bob, to carry out the deed while Paul is recovering in the hospital. Bob enlists a former prostitute, named Betty Johnson, to seduce Dr. Chris Stillman, the doctor treating Paul, to have the doctor move Paul to a private hospital room for Bob to isolate and kill Paul.