Lorelei Lee can be a beautiful showgirl engaged to become married to the wealthy Gus Esmond, much to the disapproval of Gus' rich dad, Esmond Sr., that believes that Lorelei is after his money. When Lorelei continues to a railway accompanied solely by her best friend, Dorothy Shaw, Esmond Sr. hires Ernie Malone, a private detective, to follow and report any suspicious behaviour that could divert her from the union.