After the mobster who murdered his partner is acquitted, semicorrupt detective Robert Bryant hires a beautiful female assassin, Maria, to kill him. When he discovers that he cannot afford Maria's services, Bryant is forced to hire another assassin, Madison, to kill her. Maria survives the doublecross and sets out to collect what's owed to her, one way or another.

Former police psychologist Rob helps to save young Chrissy when she is about to commit suicide by jumping of 21st-story balcony with her 4-year-old son Jake. When he persuades her to go on a date, they are trapped with Jake in an elevator after a drunken gang crashes into the elevator's engine room and creates havoc.