Psychologist Leslie Harper takes pity on Kitty Rose, a homeless street singer, and finds herself drawn into a world of old mystery and present danger. Temporarily separated from her husband until they can work out problems that negatively affect their asthmatic son, Leslie suddenly finds herself the target of her husband's wealthy family, whose powerful and unscrupulous lawyers set out to remove her from her son's life. Torn between helping the girl and fighting her own battles, Leslie takes on a challenge that could prove fatal to both of them.