In New York City, Charlie Driggs is a seemingly conventional banker whose wife has left him. In a café, a brunette who calls herself Lulu spots him leaving without paying. After a teasing confrontation, the two leave in a Pontiac GTO that, Lulu says, she acquired from a divorce. They embark on a bizarre adventure, including crashing and abandoning the car, stealing from a liquor store and leaving a diner without paying. Believing Charlie to be married, Lulu discloses that her real name is Audrey, and takes him to visit her mother, Peaches. Audrey now adopts a different persona, becoming a demure blonde. Coming to accept Audrey's free-wheeling lifestyle, Charlie realizes he is falling in love with her.