BLUE focuses on the double-life story of an escort, ie. Call Girl. Blue is a single mother who works at a vaguely defined cubicle job during the day and moonlights as a prostitute at night to make ends meet. She keeps her sex work carefully segregated from the rest of her existence. She does not tell her family nor her co-workers. But she also, has, apparently, no friends or confidants, and though she mentions other girls and a madam with whom she could presumably talk about her bifurcated life as a whole, we never see them. From the first episode, in which Blue discovers that the man she just had sex with is a childhood acquaintance, through the end of the series, when her 13-year-old son Josh tearfully accuses her of lying to him.