Andrea Sachs, a recent college graduate with aspirations of becoming a serious journalist, finds her life upended when she accepts a position as the personal assistant to Miranda Priestly, the formidable and demanding editor-in-chief of Runway magazine. Andrea must navigate the high-stakes, superficial, and grueling environment of the fashion industry while attempting to maintain her personal integrity and relationships. The narrative, presented in the first-person perspective, chronicles her descent into a world where professional success requires total submission to the whims of a tyrannical boss. As the pressure mounts, Andrea faces the reality that her dream job is rapidly eroding her sense of self and her connection to the people she loves.

This novel is widely recognized for its sharp, satirical look at the fashion industry and the grueling realities of entry-level corporate life. Readers often highlight the relatability of Andrea's struggle to balance professional ambition with personal well-being under an impossible boss. The narrative style is frequently noted for its fast-paced, witty prose that captures the superficiality of the Runway office environment. While some critics point to the predictable nature of the protagonist's arc, the book remains a staple of the workplace satire genre. Its enduring popularity stems from the universal appeal of the 'devilish boss' trope and the high-stakes drama of the fashion world.